Krzysztof Sliwa
Tufts University
H-index: 244
North America-United States
About Krzysztof Sliwa
Krzysztof Sliwa, With an exceptional h-index of 244 and a recent h-index of 144 (since 2020), a distinguished researcher at Tufts University, specializes in the field of elementary particles, gemetry/topology of universe.
His recent articles reflect a diverse array of research interests and contributions to the field:
MoEDAL search in the CMS beam pipe for magnetic monopoles produced via the Schwinger effect
Search for invisible particles produced in association with single top quarks in proton-proton collisions at =13 TeV with the ATLAS detector
arXiv: MoEDAL search in the CMS beam pipe for magnetic monopoles produced via the Schwinger effect
Search for quantum black hole production in lepton+ jet final states using proton-proton collisions at s= 13 TeV with the ATLAS detector
Measurement of cross sections for production of a Z boson in association with a flavor-inclusive or doubly b-tagged large-radius jet in proton-proton collisions at Formula …
Search for resonant and non-resonant Higgs boson pair production in the decay channel using 13 TeV pp collision data from the ATLAS detector
Differential cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb−1 of ATLAS data
Measurement of the inclusive Formula Presented production cross section in the lepton+ jets channel in pp collisions at Formula Presented with the ATLAS detector using support …
Krzysztof Sliwa Information
University | Tufts University |
|---|---|
Position | ___ |
Citations(all) | 309874 |
Citations(since 2020) | 112155 |
Cited By | 245199 |
hIndex(all) | 244 |
hIndex(since 2020) | 144 |
i10Index(all) | 1442 |
i10Index(since 2020) | 869 |
University Profile Page | Tufts University |
Krzysztof Sliwa Skills & Research Interests
elementary particles
gemetry/topology of universe
Top articles of Krzysztof Sliwa
MoEDAL search in the CMS beam pipe for magnetic monopoles produced via the Schwinger effect
Authors
B Acharya,J Alexandre,P Benes,B Bergmann,S Bertolucci,A Bevan,R Brancaccio,H Branzas,P Burian,M Campbell,S Cecchini,YM Cho,M de Montigny,A De Roeck,JR Ellis,M Fairbairn,D Felea,M Frank,O Gould,J Hays,AM Hirt,DL-J Ho,PQ Hung,J Janecek,M Kalliokoski,DH Lacarrere,C Leroy,G Levi,A Margiotta,R Maselek,A Maulik,N Mauri,NE Mavromatos,L Millward,VA Mitsou,E Musumeci,I Ostrovskiy,P-P Ouimet,J Papavassiliou,L Patrizii,GE Pavalas,JL Pinfold,LA Popa,V Popa,M Pozzato,S Pospisil,A Rajantie,R Ruiz de Austri,Z Sahnoun,M Sakellariadou,K Sakurai,S Sarkar,G Semenoff,A Shaa,G Sirri,K Sliwa,R Soluk,M Spurio,M Staelens,M Suk,M Tenti,V Togo,JA Tuszynski,A Upreti,V Vento,O Vives
Journal
arXiv preprint arXiv:2402.15682
Published Date
2024/2/24
We report on a search for magnetic monopoles (MMs) produced in ultraperipheral Pb--Pb collisions during Run-1 of the LHC. The beam pipe surrounding the interaction region of the CMS experiment was exposed to 174.29 b of Pb--Pb collisions at 2.76 TeV center-of-mass energy per collision in December 2011. It was scanned by the MoEDAL experiment using a SQUID magnetometer to search for trapped MMs. No MM signal was observed. The two distinctive features of this search are the use of a trapping volume very close to the collision point and ultra-high magnetic fields generated during the heavy-ion run that could produce MMs via the Schwinger effect. These two advantages allowed setting the first reliable, world-leading mass limits on MMs with high magnetic charge. In particular, the established limits are the strongest available in the range between 2 and 45 Dirac units, excluding MMs with masses of up to 80 GeV at 95% confidence level.
Search for invisible particles produced in association with single top quarks in proton-proton collisions at =13 TeV with the ATLAS detector
Authors
ATLAS Collaboration atlas. publications@ cern. ch,G Aad,B Abbott,J Abdallah,S Abdel Khalek,O Abdinov,R Aben,B Abi,M Abolins,OS AbouZeid,H Abramowicz,H Abreu,R Abreu,Y Abulaiti,BS Acharya,L Adamczyk,DL Adams,J Adelman,S Adomeit,T Adye,T Agatonovic-Jovin,JA Aguilar-Saavedra,M Agustoni,SP Ahlen,F Ahmadov,G Aielli,H Akerstedt,TPA Åkesson,G Akimoto,AV Akimov,GL Alberghi,J Albert,S Albrand,MJ Alconada Verzini,M Aleksa,IN Aleksandrov,C Alexa,G Alexander,G Alexandre,T Alexopoulos,M Alhroob,G Alimonti,L Alio,J Alison,BMM Allbrooke,LJ Allison,PP Allport,A Aloisio,A Alonso,F Alonso,C Alpigiani,A Altheimer,B Alvarez Gonzalez,MG Alviggi,K Amako,Y Amaral Coutinho,C Amelung,D Amidei,SP Amor Dos Santos,A Amorim,S Amoroso,N Amram,G Amundsen,C Anastopoulos,LS Ancu,N Andari,T Andeen,CF Anders,G Anders,KJ Anderson,A Andreazza,V Andrei,XS Anduaga,S Angelidakis,I Angelozzi,P Anger,A Angerami,F Anghinolfi,AV Anisenkov,N Anjos,A Annovi,M Antonelli,A Antonov,J Antos,F Anulli,M Aoki,L Aperio Bella,R Apolle,G Arabidze,I Aracena,Y Arai,JP Araque,ATH Arce,FA Arduh,J-F Arguin,S Argyropoulos,M Arik,AJ Armbruster,O Arnaez,V Arnal,H Arnold,M Arratia,O Arslan,A Artamonov,G Artoni,S Asai,N Asbah,A Ashkenazi,B Åsman,L Asquith,K Assamagan,R Astalos,M Atkinson,NB Atlay,B Auerbach,K Augsten,M Aurousseau,G Avolio,B Axen,G Azuelos,Y Azuma,MA Baak,AE Baas,C Bacci,H Bachacou,K Bachas,M Backes,M Backhaus,E Badescu,P Bagiacchi,P Bagnaia,Y Bai,T Bain,JT Baines,OK Baker,P Balek,F Balli,E Banas,Sw Banerjee,AAE Bannoura,HS Bansil,L Barak,SP Baranov,EL Barberio,D Barberis,M Barbero,T Barillari,M Barisonzi,T Barklow,N Barlow
Journal
The European Physical Journal C
Published Date
2015/2
A search for the production of single-top-quarks in association with missing energy is performed in proton–proton collisions at a centre-of-mass energy of with the ATLAS experiment at the large hadron collider using data collected in 2012, corresponding to an integrated luminosity of fb. In this search, the boson from the top quark is required to decay into an electron or a muon and a neutrino. No deviation from the standard model prediction is observed, and upper limits are set on the production cross-section for resonant and non-resonant production of an invisible exotic state in association with a right-handed top quark. In the case of resonant production, for a spin- resonance with a mass of GeV, an effective coupling strength above is excluded at 95 confidence level for the top quark and an invisible spin- state with mass between and GeV. In the case of non-resonant production, an effective …
arXiv: MoEDAL search in the CMS beam pipe for magnetic monopoles produced via the Schwinger effect
Authors
B Acharya,L Patrizii,M Spurio,S Sarkar,N Mauri,YM Cho,J Alexandre,V Popa,R Ruiz de Austri,O Gould,A Upreti,A Margiotta,B Bergmann,A De Roeck,LA Popa,NE Mavromatos,M Sakellariadou,K Sakurai,AM Hirt,A Maulik,M Kalliokoski,D Felea,P Burian,DL-J Ho,M Frank,S Bertolucci,J Papavassiliou,GE Păvălaş,M de Montigny,O Vives,S Cecchini,R Brancaccio,H Branzas,JR Ellis,R Maselek,L Millward,Z Sahnoun,P-P Ouimet,A Rajantie,JA Tuszyński,V Togo,M Staelens,G Sirri,I Ostrovskiy,J Hays,A Shaa,J Janecek,M Pozzato,A Bevan,DH Lacarrère,K Sliwa,S Pospisil,R Soluk,M Suk,C Leroy,VA Mitsou,M Fairbairn,JL Pinfold,V Vento,G Levi,P Benes,M Campbell,E Musumeci,G Semenoff,M Tenti,PQ Hung
Published Date
2024/2/23
We report on a search for magnetic monopoles (MMs) produced in ultraperipheral Pb--Pb collisions during Run-1 of the LHC. The beam pipe surrounding the interaction region of the CMS experiment was exposed to 174.29 b of Pb--Pb collisions at 2.76 TeV center-of-mass energy per collision in December 2011. It was scanned by the MoEDAL experiment using a SQUID magnetometer to search for trapped MMs. No MM signal was observed. The two distinctive features of this search are the use of a trapping volume very close to the collision point and ultra-high magnetic fields generated during the heavy-ion run that could produce MMs via the Schwinger effect. These two advantages allowed setting the first reliable, world-leading mass limits on MMs with high magnetic charge. In particular, the established limits are the strongest available in the range between 2 and 45 Dirac units, excluding MMs with masses of up to 80 GeV at 95% confidence level.
Search for quantum black hole production in lepton+ jet final states using proton-proton collisions at s= 13 TeV with the ATLAS detector
Authors
G Aad,B Abbott,DC Abbott,A Abed Abud,K Abeling,DK Abhayasinghe,SH Abidi,OS AbouZeid,NL Abraham,H Abramowicz,H Abreu,Y Abulaiti,BS Acharya,B Achkar,L Adam,C Adam Bourdarios,L Adamczyk,L Adamek,J Adelman,M Adersberger,A Adiguzel,S Adorni,T Adye,AA Affolder,Y Afik,C Agapopoulou,MN Agaras,A Aggarwal,C Agheorghiesei,JA Aguilar-Saavedra,A Ahmad,F Ahmadov,WS Ahmed,X Ai,G Aielli,S Akatsuka,M Akbiyik,TPA Åkesson,E Akilli,AV Akimov,K Al Khoury,GL Alberghi,J Albert,MJ Alconada Verzini,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,A Alfonsi,F Alfonsi,M Alhroob,B Ali,S Ali,M Aliev,G Alimonti,C Allaire,BMM Allbrooke,BW Allen,PP Allport,A Aloisio,F Alonso,C Alpigiani,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,A Ambler,L Ambroz,C Amelung,D Amidei,SP Amor Dos Santos,S Amoroso,CS Amrouche,F An,C Anastopoulos,N Andari,T Andeen,JK Anders,SY Andrean,A Andreazza,V Andrei,CR Anelli,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,E Antipov,M Antonelli,DJA Antrim,F Anulli,M Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,N Aranzabal,V Araujo Ferraz,R Araujo Pereira,C Arcangeletti,ATH Arce,FA Arduh,JF Arguin,S Argyropoulos,JH Arling,AJ Armbruster,A Armstrong,O Arnaez,H Arnold,ZP Arrubarrena Tame,G Artoni,H Asada,K Asai,S Asai,T Asawatavonvanich,NA Asbah,EM Asimakopoulou,L Asquith,J Assahsah,K Assamagan,R Astalos,RJ Atkin,M Atkinson,NB Atlay,H Atmani,K Augsten,VA Austrup,G Avolio,MK Ayoub,G Azuelos,H Bachacou,K Bachas,M Backes,F Backman,P Bagnaia,H Bahrasemani,AJ Bailey,VR Bailey,JT Baines,C Bakalis,OK Baker,PJ Bakker,E Bakos,D Bakshi Gupta,S Balaji,R Balasubramanian,EM Baldin,P Balek,F Balli
Journal
Physical Review D
Published Date
2024/2/27
A search for quantum black holes in electron+ jet and muon+ jet invariant mass spectra is performed with 140 fb− 1 of data collected by the ATLAS detector in proton-proton collisions at s= 13 TeV at the Large Hadron Collider. The observed invariant mass spectrum of lepton+ jet pairs is consistent with Standard Model expectations. Upper limits are set at 95% confidence level on the production cross section times branching fractions for quantum black holes decaying into a lepton and a quark in a search region with invariant mass above 2.0 TeV. The resulting quantum black hole lower mass threshold limit is 9.2 TeV in the Arkani-Hamed-Dimopoulos-Dvali model, and 6.8 TeV in the Randall-Sundrum model.
Measurement of cross sections for production of a Z boson in association with a flavor-inclusive or doubly b-tagged large-radius jet in proton-proton collisions at Formula …
Authors
P Jackson,AXY Kong,JL Oliver,TA Ruggeri,AS Sharma,MJ White,V Jain,SP Swift,DM Gingrich,JL Pinfold,H Wang,ORHAN Cakir,H Duran Yildiz,S Kuday,I Turk Cakir,S Sultansoy,C Adam Bourdarios,M Belfkir,N Berger,F Costanza,A Cueto,O Dartsi,M Delmastro,L Di Ciaccio,L Franco,C Goy,T Guillemin,T Hryn'Ova,S Jézéquel,I Koletsou,R Lafaye,J Levêque,N Lorenzo Martinez,L Portales,E Sauvan,I Wingerter-Seez,Y Abulaiti,DP Benjamin,VS Bhopatkar,S Chekanov,WH Hopkins,E Kourlitis,T LeCompte,J Love,J Metcalfe,AS Mete,A Paramonov,J Proudfoot,P Van Gemmeren,J Zhang,S Berlendis,E Cheu,CM Delitzsch,KA Johns,W Lampl,M LeBlanc,RE Lindley,P Loch,JP Rutherfoord,EW Varnes,H Zhou,Y Zhou,D Bakshi Gupta,B Burghgrave,K De,T Eifert,A Farbin,HK Hadavand,JD Little,N Ozturk,G Usai,A White,S Angelidakis,P Bellos,D Fassouliotis,I Gkialas,C Kourkoumelis,K Papageorgiou,T Alexopoulos,C Bakalis,N Benekos,EN Gazis,P Gkountoumis,C Kitsaki,A Koulouris,S Maltezos,C Paraskevopoulos,G Zacharis,T Andeen,CD Burton,K Choi,N Nikiforou,PUE Onyisi,H Potti,A Roy,M Unal,AF Webb,AJ Beddall,E Celebi,SA Cetin,S Simsek,Aytül Adiguzel,A Bayirli,S Gurbuz,S Istin,VE Ozcan,A Beddall,A Bingul,Z Uysal,F Khalil-Zada,D Bogavac,M Bosman,MP Casado,L Castillo Garcia,FA Forster,G Giannini,EL Gkougkousis,S Gonzalez Fernandez,C Grieco,S Grinstein,A Juste Rozas,S Kazakos,I Korolkov,M Martinez,LM Mir,C Moreno Martinez,JL Munoz Martinez,N Orlando,A Pacheco Pages,C Padilla Aranda,I Riu,R Rosten,A Salvador Salas,A Sonay,S Terzo,TR Van Daalen,D Vazquez Furelos,J Barreiro Guimaraes da Costa,HJ Cheng,X Chu,H Cui,Y Fang,JA Garcia Pascual,Hu YF,Y Huang,MG Kurth,M Li,Z Liang,P Liu,Y Liu
Journal
Physical Review D
Published Date
2023
We present measurements of cross sections for production of a leptonically decaying Z boson in association with a large-radius jet in 13 TeV proton-proton collisions at the LHC, using 36 fb - 1 of data from the ATLAS detector. Integrated and differential cross sections are measured at particle level in both a flavor inclusive and a doubly b -tagged fiducial phase space. The large-radius jet mass and transverse momentum, its kinematic relationship to the Z boson, and the angular separation of b -tagged small-radius track jets within the large-radius jet are measured. This measurement constitutes an important test of perturbative quantum chromodynamics in kinematic and flavor configurations relevant to several Higgs boson and beyond-Standard-Model physics analyses. The results highlight issues with modeling of additional hadronic activity in the flavor-inclusive selection, and a distinction between flavor-number schemes in the b -tagged phase space.
Search for resonant and non-resonant Higgs boson pair production in the decay channel using 13 TeV pp collision data from the ATLAS detector
Authors
Georges Aad,B Abbott,DC Abbott,Abud Abed Abud,Kira Abeling,Deshan Kavishka Abhayasinghe,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Y Abulaiti,AC Abusleme Hoffman,BS Acharya,B Achkar,L Adam,C Adam Bourdarios,L Adamczyk,L Adamek,SV Addepalli,J Adelman,Aytül Adiguzel,S Adorni,T Adye,AA Affolder,Y Afik,C Agapopoulou,MN Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,JA Aguilar-Saavedra,A Ahmad,F Ahmadov,WS Ahmed,X Ai,G Aielli,I Aizenberg,S Akatsuka,M Akbiyik,TPA Åkesson,AV Akimov,K Al Khoury,GL Alberghi,J Albert,P Albicocco,MJ Alconada Verzini,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,A Alfonsi,F Alfonsi,M Alhroob,B Ali,S Ali,M Aliev,G Alimonti,C Allaire,BMM Allbrooke,PP Allport,A Aloisio,F Alonso,C Alpigiani,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,A Ambler,L Ambroz,C Amelung,D Amidei,SP Amor Dos Santos,S Amoroso,KR Amos,CS Amrouche,V Ananiev,C Anastopoulos,N Andari,T Andeen,JK Anders,SY Andrean,A Andreazza,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,E Antipov,M Antonelli,DJA Antrim,F Anulli,M Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,N Aranzabal,V Araujo Ferraz,C Arcangeletti,ATH Arce,E Arena,JF Arguin,S Argyropoulos,J-H Arling,AJ Armbruster,A Armstrong,O Arnaez,H Arnold,ZP Arrubarrena Tame,G Artoni,H Asada,K Asai,S Asai,NA Asbah,EM Asimakopoulou,L Asquith,J Assahsah,K Assamagan,R Astalos,RJ Atkin,M Atkinson,NB Atlay,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,VA Austrup,G Avner,G Avolio,MK Ayoub,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,P Bagnaia,H Bahrasemani,AJ Bailey,VR Bailey,JT Baines,C Bakalis,OK Baker,PJ Bakker,E Bakos,D Bakshi Gupta,S Balaji,R Balasubramanian
Journal
Journal of High Energy Physics
Published Date
2023/7
A search for Higgs boson pair production in events with two b-jets and two τ-leptons is presented, using a proton–proton collision dataset with an integrated luminosity of 139 fb− 1 collected at= 13 TeV by the ATLAS experiment at the LHC. Higgs boson pairs produced non-resonantly or in the decay of a narrow scalar resonance in the mass range from 251 to 1600 GeV are targeted. Events in which at least one τ-lepton decays hadronically are considered, and multivariate discriminants are used to reject the backgrounds. No significant excess of events above the expected background is observed in the non-resonant search. The largest excess in the resonant search is observed at a resonance mass of 1 TeV, with a local (global) significance of 3. 1σ (2. 0σ). Observed (expected) 95% confidence-level upper limits are set on the non-resonant Higgs boson pair-production cross-section at 4.7 (3.9) times the Standard …
Differential cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb−1 of ATLAS data
Authors
Georges Aad,Braden Abbott,DC Abbott,Adam Abed Abud,Kira Abeling,Deshan Kavishka Abhayasinghe,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Y Abulaiti,AC Abusleme Hoffman,BS Acharya,B Achkar,L Adam,C Adam Bourdarios,L Adamczyk,L Adamek,SV Addepalli,J Adelman,Aytül Adiguzel,S Adorni,T Adye,AA Affolder,Y Afik,C Agapopoulou,MN Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,JA Aguilar-Saavedra,A Ahmad,F Ahmadov,WS Ahmed,X Ai,G Aielli,I Aizenberg,S Akatsuka,M Akbiyik,TPA Åkesson,AV Akimov,K Al Khoury,GL Alberghi,J Albert,P Albicocco,MJ Alconada Verzini,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,A Alfonsi,F Alfonsi,M Alhroob,B Ali,S Ali,M Aliev,G Alimonti,C Allaire,BMM Allbrooke,PP Allport,A Aloisio,F Alonso,C Alpigiani,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,A Ambler,L Ambroz,C Amelung,D Amidei,SP Amor Dos Santos,S Amoroso,KR Amos,CS Amrouche,V Ananiev,C Anastopoulos,N Andari,T Andeen,JK Anders,SY Andrean,A Andreazza,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,E Antipov,M Antonelli,DJA Antrim,F Anulli,M Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,N Aranzabal,V Araujo Ferraz,C Arcangeletti,ATH Arce,E Arena,JF Arguin,S Argyropoulos,J-H Arling,AJ Armbruster,A Armstrong,O Arnaez,H Arnold,ZP Arrubarrena Tame,G Artoni,H Asada,K Asai,S Asai,NA Asbah,EM Asimakopoulou,L Asquith,J Assahsah,K Assamagan,R Astalos,RJ Atkin,M Atkinson,NB Atlay,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,VA Austrup,G Avner,G Avolio,MK Ayoub,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,P Bagnaia,M Bahmani,H Bahrasemani,AJ Bailey,VR Bailey,JT Baines,C Bakalis,OK Baker,PJ Bakker,E Bakos,D Bakshi Gupta,S Balaji
Journal
Journal of High Energy Physics
Published Date
2023/4
Measurements of single-, double-, and triple-differential cross-sections are presented for boosted top-quark pair-production in 13 TeV proton–proton collisions recorded by the ATLAS detector at the LHC. The top quarks are observed through their hadronic decay and reconstructed as large-radius jets with the leading jet having transverse momentum (p T) greater than 500 GeV. The observed data are unfolded to remove detector effects. The particle-level cross-section, multiplied by the branching fraction and measured in a fiducial phase space defined by requiring the leading and second-leading jets to have p T> 500 GeV and p T> 350 GeV, respectively, is 331±3 (stat.)±39 (syst.) fb. This is approximately 20% lower than the prediction of fb by P owheg+ P ythia 8 with next-to-leading-order (NLO) accuracy but consistent within the theoretical uncertainties. Results are also presented at the parton level …
Measurement of the inclusive Formula Presented production cross section in the lepton+ jets channel in pp collisions at Formula Presented with the ATLAS detector using support …
Authors
P Jackson,JL Oliver,A Petridis,A Qureshi,AS Sharma,MJ White,VMM Cairo,V Jain,SP Swift,DM Gingrich,JL Pinfold,X Sun,H Wang,O Cakir,HD Yildiz,S Kuday,I Turk Cakir,S Sultansoy,N Berger,F Costanza,O Dartsi,M Delmastro,L Di Ciaccio,PJ Falke,S Falke,C Goy,T Guillemin,T Hryn'Ova,S Jezequel,O Kivernyk,I Koletsou,R Lafaye,J Leveque,N Lorenzo Martinez,S Raspopov,E Sauvan,BH Smart,S Todorova-Nova,A Vallier,I Wingerter-Seez,Y Abulaiti,DP Benjamin,S Chekanov,WH Hopkins,T Lecompte,BX Liu,J Love,D Malon,J Metcalfe,A Paramonov,J Proudfoot,S Ryu,RW Stanek,P Van Gemmeren,R Wang,J Zhang,S Berlendis,E Cheu,CM Delitzsch,KA Johns,S Jones,W Lampl,M Leblanc,R Leone,P Loch,JP Rutherfoord,EW Varnes,Y Zhou,D Bakshi Gupta,B Burghgrave,K De,A Farbin,J Griffiths,HK Hadavand,L Heelan,JD Little,N Ozturk,G Usai,A White,P Bellos,D Fassouliotis,I Gkialas,C Kourkoumelis,K Papageorgiou,N Tsirintanis,T Alexopoulos,C Bakalis,N Benekos,EN Gazis,P Gkountoumis,A Koulouris,S Maltezos,P Moschovakos,I Panagoulias,G Zacharis,T Andeen,R Narayan,N Nikiforou,PUE Onyisi,H Potti,AF Webb,AJ Beddall,E Celebi,SA Cetin,Aytül Adiguzel,S Gurbuz,VE Ozcan,A Beddall,A Bingul,F Khalil-Zada,M Bosman,MP Casado,E Cavallaro,M Cavalli-Sforza,C Fischer,FA Forster,D Gerbaudo,EL Gkougkousis,J Glatzer,S Grinstein,A Juste Rozas,I Korolkov,M Martinez,LM Mir,JL Munoz Martinez,N Orlando,A Pacheco Pages,C Padilla Aranda,I Riu,C Rizzi,A Rodriguez Perez,R Rosten,S Terzo,TR Van Daalen,D Vazquez Furelos,G Volpi,R Zaidan,MK Ayoub,J Barreiro Guimaraes da Costa,C Bertella,HJ Cheng,Y Fang,JA Garcia Pascual,S Han,Y Huang,MG Kurth,M Li,Q Li,Z Liang,Y Liu
Journal
Physical Review D
Published Date
2023
A measurement of the top quark pair-production cross section in the lepton + jets decay channel is presented. It is based on 4.6 fb - 1 of s = 7 TeV p p collision data collected during 2011 by the ATLAS experiment at the CERN Large Hadron Collider. A three-class, multidimensional event classifier based on support vector machines is used to differentiate t t ¯ events from backgrounds. The t t ¯ production cross section is found to be σ t t ¯ = 168.5 ± 0.7 ( stat ) - 5.9 + 6.2 ( syst ) - 3.2 + 3.4 ( lumi ) pb . The result is consistent with the Standard Model prediction based on QCD calculations at next-to-next-to-leading order.
Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at = 7 and 8 TeV
Authors
Georges Aad,B Abbott,DC Abbott,A Abed Abud,K Abeling,DK Abhayasinghe,SH Abidi,A Aboulhorma,H Abramowicz,H Abreu,Y Abulaiti,AC Abusleme Hoffman,BS Acharya,B Achkar,L Adam,C Adam Bourdarios,L Adamczyk,L Adamek,SV Addepalli,J Adelman,A Adiguzel,S Adorni,T Adye,AA Affolder,Y Afik,C Agapopoulou,MN Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,JA Aguilar-Saavedra,A Ahmad,F Ahmadov,WS Ahmed,X Ai,G Aielli,I Aizenberg,S Akatsuka,M Akbiyik,TPA Åkesson,AV Akimov,K Al Khoury,GL Alberghi,J Albert,P Albicocco,MJ Alconada Verzini,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,A Alfonsi,F Alfonsi,M Alhroob,B Ali,S Ali,M Aliev,G Alimonti,C Allaire,BMM Allbrooke,PP Allport,A Aloisio,F Alonso,C Alpigiani,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,A Ambler,L Ambroz,C Amelung,D Amidei,SP Amor Dos Santos,S Amoroso,CS Amrouche,C Anastopoulos,N Andari,T Andeen,JK Anders,SY Andrean,A Andreazza,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,E Antipov,M Antonelli,DJA Antrim,F Anulli,M Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,N Aranzabal,V Araujo Ferraz,C Arcangeletti,ATH Arce,E Arena,JF Arguin,S Argyropoulos,J-H Arling,AJ Armbruster,A Armstrong,O Arnaez,H Arnold,ZP Arrubarrena Tame,G Artoni,H Asada,K Asai,S Asai,NA Asbah,EM Asimakopoulou,L Asquith,J Assahsah,K Assamagan,R Astalos,RJ Atkin,M Atkinson,NB Atlay,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,VA Austrup,G Avner,G Avolio,MK Ayoub,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,P Bagnaia,H Bahrasemani,AJ Bailey,VR Bailey,JT Baines,C Bakalis,OK Baker,PJ Bakker,E Bakos,D Bakshi Gupta,S Balaji,R Balasubramanian,EM Baldin,P Balek
Journal
Journal of High Energy Physics
Published Date
2023/7
A combination of measurements of the inclusive top-quark pair production cross-section performed by ATLAS and CMS in proton–proton collisions at centre-of-mass energies of 7 and 8 TeV at the LHC is presented. The cross-sections are obtained using top-quark pair decays with an opposite-charge electron–muon pair in the final state and with data corresponding to an integrated luminosity of about 5 fb− 1 at= 7 TeV and about 20 fb− 1 at= 8 TeV for each experiment. The combined cross-sections are determined to be 178. 5±4. 7 pb at= 7 TeV and pb at= 8 TeV with a correlation of 0.41, using a reference top-quark mass value of 172.5 GeV. The ratio of the combined cross-sections is determined to be R 8/7= 1. 363±0. 032. The combined measured cross-sections and their ratio agree well with theory calculations using several parton distribution function (PDF) sets. The values of the top-quark pole …
Measurement of the properties of Higgs boson production at = 13 TeV in the H → γγ channel using 139 fb−1 of pp collision data with the ATLAS experiment
Authors
Georges Aad,B Abbott,DC Abbott,Kira Abeling,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,AC Abusleme Hoffman,BS Acharya,B Achkar,L Adam,C Adam Bourdarios,L Adamczyk,L Adamek,SV Addepalli,J Adelman,Aytül Adiguzel,S Adorni,T Adye,AA Affolder,Y Afik,MN Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,JA Aguilar-Saavedra,A Ahmad,F Ahmadov,WS Ahmed,S Ahuja,X Ai,G Aielli,I Aizenberg,M Akbiyik,TPA Åkesson,AV Akimov,K Al Khoury,GL Alberghi,J Albert,P Albicocco,MJ Alconada Verzini,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,A Alfonsi,F Alfonsi,M Alhroob,B Ali,S Ali,M Aliev,G Alimonti,C Allaire,BMM Allbrooke,PP Allport,A Aloisio,F Alonso,C Alpigiani,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,A Ambler,C Amelung,CG Ames,D Amidei,SP Amor Dos Santos,S Amoroso,KR Amos,CS Amrouche,V Ananiev,C Anastopoulos,N Andari,T Andeen,JK Anders,SY Andrean,A Andreazza,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,E Antipov,M Antonelli,DJA Antrim,F Anulli,M Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,C Appelt,N Aranzabal,V Araujo Ferraz,C Arcangeletti,ATH Arce,E Arena,JF Arguin,S Argyropoulos,J-H Arling,AJ Armbruster,O Arnaez,H Arnold,ZP Arrubarrena Tame,G Artoni,H Asada,K Asai,S Asai,NA Asbah,EM Asimakopoulou,J Assahsah,K Assamagan,R Astalos,RJ Atkin,M Atkinson,NB Atlay,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,AD Auriol,VA Austrup,G Avner,G Avolio,K Axiotis,MK Ayoub,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,P Bagnaia,M Bahmani,AJ Bailey,VR Bailey,JT Baines,C Bakalis,OK Baker,PJ Bakker,E Bakos,D Bakshi Gupta,S Balaji,R Balasubramanian,EM Baldin,P Balek
Journal
Journal of High Energy Physics
Published Date
2023/7
Measurements of Higgs boson production cross-sections are carried out in the diphoton decay channel using 139 fb− 1 of pp collision data at= 13 TeV collected by the ATLAS experiment at the LHC. The analysis is based on the definition of 101 distinct signal regions using machine-learning techniques. The inclusive Higgs boson signal strength in the diphoton channel is measured to be. Cross-sections for gluon-gluon fusion, vector-boson fusion, associated production with a W or Z boson, and top associated production processes are reported. An upper limit of 10 times the Standard Model prediction is set for the associated production process of a Higgs boson with a single top quark, which has a unique sensitivity to the sign of the top quark Yukawa coupling. Higgs boson production is further characterized through measurements of Simplified Template Cross-Sections (STXS). In total, cross-sections of …
Search for flavor-changing neutral-current couplings between the top quark and the Z boson with proton-proton collisions at s= 13 TeV with the ATLAS detector
Authors
G Aad,B Abbott,DC Abbott,A Abed Abud,K Abeling,DK Abhayasinghe,SH Abidi,A Aboulhorma,H Abramowicz,H Abreu,Y Abulaiti,AC Abusleme Hoffman,BS Acharya,B Achkar,L Adam,C Adam Bourdarios,L Adamczyk,L Adamek,SV Addepalli,J Adelman,A Adiguzel,S Adorni,T Adye,AA Affolder,Y Afik,C Agapopoulou,MN Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,JA Aguilar-Saavedra,A Ahmad,F Ahmadov,WS Ahmed,X Ai,G Aielli,I Aizenberg,S Akatsuka,M Akbiyik,TPA Åkesson,AV Akimov,K Al Khoury,GL Alberghi,J Albert,P Albicocco,MJ Alconada Verzini,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,A Alfonsi,F Alfonsi,M Alhroob,B Ali,S Ali,M Aliev,G Alimonti,C Allaire,BMM Allbrooke,PP Allport,A Aloisio,F Alonso,C Alpigiani,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,A Ambler,L Ambroz,C Amelung,D Amidei,SP Amor Dos Santos,S Amoroso,KR Amos,CS Amrouche,V Ananiev,C Anastopoulos,N Andari,T Andeen,JK Anders,SY Andrean,A Andreazza,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,E Antipov,M Antonelli,DJA Antrim,F Anulli,M Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,N Aranzabal,V Araujo Ferraz,C Arcangeletti,ATH Arce,E Arena,JF Arguin,S Argyropoulos,JH Arling,AJ Armbruster,A Armstrong,O Arnaez,H Arnold,ZP Arrubarrena Tame,G Artoni,H Asada,K Asai,S Asai,NA Asbah,EM Asimakopoulou,L Asquith,J Assahsah,K Assamagan,R Astalos,RJ Atkin,M Atkinson,NB Atlay,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,VA Austrup,G Avner,G Avolio,MK Ayoub,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,P Bagnaia,M Bahmani,H Bahrasemani,AJ Bailey,VR Bailey,JT Baines,C Bakalis,OK Baker,PJ Bakker,E Bakos,D Bakshi Gupta,S Balaji
Journal
Physical Review D
Published Date
2023/8/30
A search for flavor-changing neutral-current couplings between a top quark, an up or charm quark, and a Z boson is presented, using proton–proton collision data at s= 13 TeV collected by the ATLAS detector at the Large Hadron Collider. The analyzed data set corresponds to an integrated luminosity of 139 fb− 1. The search targets both single-top-quark events produced as g q→ t Z (with q= u, c) and top-quark-pair events, with one top quark decaying through the t→ Z q channel. The analysis considers events with three leptons (electrons or muons), a b-tagged jet, possible additional jets, and missing transverse momentum. The data are found to be consistent with the background-only hypothesis and 95% confidence-level limits on the t→ Z q branching ratios, assuming only tensor operators of the Standard Model effective field theory framework contribute to the t Z q vertices. These are 6.2× 10− 5 (13× 10− 5) for t→ Z u (t→ Z c) for a left-handed t Z q coupling, and 6.6× 10− 5 (12× 10− 5) in the case of a right-handed coupling. These results are interpreted as 95% CL upper limits on the strength of the corresponding couplings, yielding limits for| C u W (13)*| and| C u B (13)*|(| C u W (31)| and| C u B (31)|) of 0.15 (0.16), and limits for| C u W (23)*| and| C u B (23)*|(| C u W (32)| and| C u B (32)|) of 0.22 (0.21), assuming a new-physics energy scale Λ NP of 1 TeV.
The ATLAS Experiment at the CERN Large Hadron Collider: A Description of the Detector Configuration for Run 3
Authors
Georges Aad,Braden Keim Abbott,Dale Abbott,Jalal Abdallah,Kira Abeling,Haider Abidi,Asmaa Aboulhorma,Sergey Abovyan,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Angel Abusleme,Bobby Samir Acharya,Claire Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,Sagar Addepalli,Jahred Adelman,Michael Adersberger,Aytul Adiguzel,Sofia Adorni Braccesi Chiassi,Tim Adye,Tony Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Juan Antonio Aguilar Saavedra,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Malak Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,Torsten Akesson,Gevorg Akhperjanyan,Andrei Akimov,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Sara Alderweireldt,Martin Aleksa,Igor Alexandrov,Calin Alexa,Theodoros Alexopoulos,Alice Alfonsi,Fabrizio Alfonsi,Muhammad Alhroob,Babar Ali,Shahzad Ali,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,Jérôme Allard,Benedict Allbrooke,Cristian Andres Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,Manuel Alvarez Estevez,Barbara Alvarez Gonzalez,Mariagrazia Alviggi,Mohamed Aly,Yara Do Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,Christoph Ames,Dante Amidei,Susana Patricia Amor dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,Nansi Andari,Timothy Robert Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Christopher Ryan Anelli,Stylianos Angelidakis,Aaron Angerami,Alexey Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Mihai Antonescu,Daniel Joseph Antrim,Fabio Anulli,Masato Aoki,Takumi Aoki,Javier Alberto Aparisi Pozo,Marco Aparo,Ludovica Aperio Bella,Christian Appelt,Nordin Aranzabal Barrio,Victor Araujo Ferraz,Chiara Arcangeletti,Ayana Tamu Arce,Eloisa Arena,Jean-Francois Arguin,Anastasios Argyris,Spyros Argyropoulos,Jan-Hendrik Arling,Aaron James Armbruster,Charles Edward Armijo,Olivier Arnaez,Hannah Arnold,Zulit Paola Arrubarrena Tame,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Jihad Assahsah,Ketevi Adikle Assamagan,Robert Astalos,Ryan Justin Atkin,Markus Julian Atkinson,Naim Bora Atlay,Hicham Atmani,Prachi Atmasiddha,Erwann Aubernon,Kamil Augsten,Aune Aune,Silvia Auricchio,Adrien Auriol,Florian Aust,Volker Andreas Austrup,Gal Avner,Giuseppe Avolio,Giulio Avoni,David Axen,Konstantinos Axiotis,Pelin Aydiner,Mohamad Kassem Ayoub,Tatiana Azaryan,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas
Published Date
2023/6/8
The ATLAS detector is installed in its experimental cavern at Point 1 of the CERN Large Hadron Collider. During Run 2 of the LHC, a luminosity of was routinely achieved at the start of fills, twice the design luminosity. For Run 3, accelerator improvements, notably luminosity levelling, allow sustained running at an instantaneous luminosity of , with an average of up to 60 interactions per bunch crossing. The ATLAS detector has been upgraded to recover Run 1 single-lepton trigger thresholds while operating comfortably under Run 3 sustained pileup conditions. A fourth pixel layer 3.3 cm from the beam axis was added before Run 2 to improve vertex reconstruction and -tagging performance. New Liquid Argon Calorimeter digital trigger electronics, with corresponding upgrades to the Trigger and Data Acquisition system, take advantage of a factor of 10 finer granularity to improve triggering on electrons, photons, taus, and hadronic signatures through increased pileup rejection. The inner muon endcap wheels were replaced by New Small Wheels with Micromegas and small-strip Thin Gap Chamber detectors, providing both precision tracking and Level-1 Muon trigger functionality. Tile Calorimeter scintillation counters were added to improve electron energy resolution and background rejection. Upgrades to Minimum Bias Trigger Scintillators and Forward Detectors improve luminosity monitoring and enable total proton-proton cross section, diffractive physics, and heavy ion measurements. These upgrades are all compatible with operation in the much harsher environment anticipated after the High-Luminosity …
Search for a light charged Higgs boson in decays, with , in the lepton+jets final state in proton-proton collisions at TeV with the ATLAS detector
Authors
ATLAS Collaboration
Journal
arXiv preprint arXiv:2302.11739
Published Date
2023/2/23
A search for a charged Higgs boson, , produced in top-quark decays, , is presented. The search targets decays into a bottom and a charm quark, . The analysis focuses on a selection enriched in top-quark pair production, where one top quark decays into a leptonically decaying boson and a bottom quark, and the other top quark decays into a charged Higgs boson and a bottom quark. This topology leads to a lepton-plus-jets final state, characterised by an isolated electron or muon and at least four jets. The search exploits the high multiplicity of jets containing -hadrons, and deploys a neural network classifier that uses the kinematic differences between the signal and the background. The search uses a dataset of proton-proton collisions collected at a centre-of-mass energy TeV between 2015 and 2018 with the ATLAS detector at CERN's Large Hadron Collider, amounting to an integrated luminosity of 139 fb. Observed (expected) 95% confidence-level upper limits between 0.15% (0.09%) and 0.42% (0.25%) are derived for the product of branching fractions for charged Higgs boson masses between 60 and 160 GeV, assuming the SM production of the top-quark pairs.
Search for single vector-like B quark production and decay via B → bH( ) in pp collisions at = 13 TeV with the ATLAS detector
Authors
Georges Aad,B Abbott,DC Abbott,A Abed Abud,K Abeling,DK Abhayasinghe,SH Abidi,H Abramowicz,H Abreu,Y Abulaiti,AC Abusleme Hoffman,BS Acharya,B Achkar,L Adam,C Adam Bourdarios,L Adamczyk,L Adamek,J Adelman,A Adiguzel,S Adorni,T Adye,AA Affolder,Y Afik,C Agapopoulou,MN Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,JA Aguilar-Saavedra,A Ahmad,F Ahmadov,WS Ahmed,X Ai,G Aielli,S Akatsuka,M Akbiyik,TPA Åkesson,AV Akimov,K Al Khoury,GL Alberghi,J Albert,MJ Alconada Verzini,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,A Alfonsi,F Alfonsi,M Alhroob,B Ali,S Ali,M Aliev,G Alimonti,C Allaire,BMM Allbrooke,PP Allport,A Aloisio,F Alonso,C Alpigiani,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,A Ambler,L Ambroz,C Amelung,D Amidei,SP Amor Dos Santos,S Amoroso,CS Amrouche,C Anastopoulos,N Andari,T Andeen,JK Anders,SY Andrean,A Andreazza,V Andrei,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,E Antipov,M Antonelli,DJA Antrim,F Anulli,M Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,N Aranzabal,V Araujo Ferraz,C Arcangeletti,ATH Arce,E Arena,JF Arguin,S Argyropoulos,J-H Arling,AJ Armbruster,A Armstrong,O Arnaez,H Arnold,ZP Arrubarrena Tame,G Artoni,H Asada,K Asai,S Asai,NA Asbah,EM Asimakopoulou,L Asquith,J Assahsah,K Assamagan,R Astalos,RJ Atkin,M Atkinson,NB Atlay,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,VA Austrup,G Avolio,MK Ayoub,G Azuelos,D Babal,H Bachacou,K Bachas,F Backman,A Badea,P Bagnaia,H Bahrasemani,AJ Bailey,VR Bailey,JT Baines,C Bakalis,OK Baker,PJ Bakker,E Bakos,D Bakshi Gupta,S Balaji,R Balasubramanian,EM Baldin,P Balek,E Ballabene,F Balli,WK Balunas,J Balz,E Banas
Journal
Journal of High Energy Physics
Published Date
2023/11
A search is presented for single production of a vector-like B quark decaying into a Standard Model b-quark and a Standard Model Higgs boson, which decays into a pair. The search is carried out in 139 fb− 1 of= 13 TeV proton-proton collision data collected by the ATLAS detector at the LHC between 2015 and 2018. No significant deviation from the Standard Model background prediction is observed, and mass-dependent exclusion limits at the 95% confidence level are set on the resonance production cross-section in several theoretical scenarios determined by the couplings c W, c Z and c H between the B quark and the Standard Model W, Z and Higgs bosons, respectively. For a vector-like B occurring as an isospin singlet, the search excludes values of c W greater than 0.45 for a B resonance mass (m B) between 1.0 and 1.2 TeV. For 1. 2 TeV< m B< 2. 0 TeV, c W values larger than 0.50–0.65 are excluded …
Measurement of the inclusive t(t)over-bar production cross section in the lepton plus jets channel in pp collisions at √s=7 TeV with the ATLAS detector using …
Authors
P Jackson,JL Oliver,A Petridis,A Qureshi,AS Sharma,MJ White,VMM Cairo,V Jain,SP Swift,DM Gingrich,JL Pinfold,X Sun,H Wang,ORHAN Cakir,H Yildiz,S Kuday,I Turk Cakir,S Sultansoy,N Berger,F Costanza,O Dartsi,M Delmastro,L Di Ciaccio,PJ Falke,S Falke,C Goy,T Guillemin,T Hryn’ova,S Jézéquel,O Kivernyk,I Koletsou,R Lafaye,J Levêque,N Lorenzo Martinez,S Raspopov,E Sauvan,BH Smart,S Todorova-Nova,A Vallier,I Wingerter-Seez,Y Abulaiti,DP Benjamin,S Chekanov,WH Hopkins,T LeCompte,BX Liu,J Love,D Malon,J Metcalfe,A Paramonov,J Proudfoot,S Ryu,RW Stanek,P Van Gemmeren,R Wang,J Zhang,S Berlendis,E Cheu,CM Delitzsch,KA Johns,S Jones,W Lampl,M LeBlanc,R Leone,P Loch,JP Rutherfoord,EW Varnes,Y Zhou,D Bakshi Gupta,B Burghgrave,K De,A Farbin,J Griffiths,HK Hadavand,L Heelan,JD Little,N Ozturk,G Usai,A White,P Bellos,D Fassouliotis,I Gkialas,C Kourkoumelis,K Papageorgiou,N Tsirintanis,T Alexopoulos,C Bakalis,N Benekos,EN Gazis,P Gkountoumis,A Koulouris,S Maltezos,P Moschovakos,I Panagoulias,G Zacharis,T Andeen,R Narayan,N Nikiforou,PUE Onyisi,H Potti,AF Webb,AJ Beddall,E Celebi,SA Cetin,A Adiguzel,S Gurbuz,A Beddall,A Bingul,F Khalil-Zada,M Bosman,MP Casado,E Cavallaro,M Cavalli-Sforza,C Fischer,FA Förster,D Gerbaudo,EL Gkougkousis,J Glatzer,S Grinstein,A Juste Rozas,I Korolkov,M Martinez,LM Mir,JL Munoz Martinez,N Orlando,A Pacheco Pages,C Padilla Aranda,I Riu,C Rizzi,A Rodriguez Perez,R Rosten,S Terzo,TR Van Daalen,D Vazquez Furelos,G Volpi,R Zaidan,MK Ayoub,J Barreiro Guimarães da Costa,C Bertella,HJ Cheng,Y Fang,JA García Pascual,S Han,Y Huang,MG Kurth,M Li,Q Li,Z Liang,Y Liu,J Llorente Merino
Journal
Physical Review D
Published Date
2023
A measurement of the top quark pair-production cross section in the lepton + jets decay channel is presented. It is based on 4.6 fb(-1) of root s = 7 TeV pp collision data collected during 2011 by the ATLAS experiment at the CERN Large Hadron Collider. A three-class, multidimensional event classifier based on support vector machines is used to differentiate t (T) over bar events from backgrounds. The tt production cross section is found to be sigma(t (t) over bar) = 168.5 +/- 0.7(stat)(-5.9)(+6.2) (syst)(-3.2)(+3.4) (lumi) pb. The result is consistent with the Standard Model prediction based on QCD calculations at next-to-next-to-leading order.
Search for the charged-lepton-flavor-violating decay Z→ eμ in pp collisions at s= 13 TeV with the ATLAS detector
Authors
Georges Aad,B Abbott,DC Abbott,Adam Abed Abud,Kira Abeling,Deshan Kavishka Abhayasinghe,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,AC Abusleme Hoffman,Bobby Samir Acharya,Baida Achkar,Lennart Adam,C Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,SV Addepalli,Jahred Adelman,Aytul Adiguzel,S Adorni,Tim Adye,AA Affolder,Yoav Afik,Christina Agapopoulou,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,JA Aguilar-Saavedra,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Xiaocong Ai,Giulio Aielli,Iakov Aizenberg,Shunichi Akatsuka,Melike Akbiyik,TPA Åkesson,AV Akimov,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,MJ Alconada Verzini,Sara Alderweireldt,Martin Aleksa,IN Aleksandrov,Calin Alexa,Theodoros Alexopoulos,Alice Alfonsi,Fabrizio Alfonsi,Muhammad Alhroob,Babar Ali,Shahzad Ali,Malik Aliev,Gianluca Alimonti,Corentin Allaire,BMM Allbrooke,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,Alessandro Ambler,Luca Ambroz,Christoph Amelung,Dante Amidei,SP Amor Dos Santos,Simone Amoroso,Kieran Robert Amos,Cherifa Sabrina Amrouche,Viktor Ananiev,Christos Anastopoulos,Nansi Andari,T Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,AV Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,DJA Antrim,Fabio Anulli,Masato Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,N Aranzabal,V Araujo Ferraz,Chiara Arcangeletti,ATH Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Aaron James Armbruster,Alexander Armstrong,Olivier Arnaez,Hannah Arnold,ZP Arrubarrena Tame,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Eleni Myrto Asimakopoulou,Lily Asquith,Jihad Assahsah,K Assamagan,Robert Astalos,Ryan Justin Atkin,M Atkinson,Naim Bora Atlay,Hicham Atmani,PA Atmasiddha,Kamil Augsten,Silvia Auricchio,Volker Andreas Austrup,Gal Avner,Giuseppe Avolio,Mohamad Kassem Ayoub,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,F Backman,Anthony Badea,Paolo Bagnaia,H Bahrasemani,AJ Bailey,VR Bailey,JT Baines,Christos Bakalis,OK Baker,Pepijn Johannes Bakker,Evelin Bakos,D Bakshi Gupta,Shyam Balaji,Rahul Balasubramanian
Journal
Physical Review D
Published Date
2023/8/25
A search for the charged-lepton-flavor-violating process Z→ e μ is presented, using 139 fb− 1 of s= 13 TeV p p collision data collected by the ATLAS experiment at the LHC. An excess in the e μ invariant mass spectrum near the Z boson mass would be a striking signature of new physics. No excess is observed, and an upper limit B (Z→ e μ)< 2.62× 10− 7 is placed on the branching fraction at 95% confidence level, which is the most stringent limit to date.
Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at = 13 TeV with the ATLAS detector
Authors
G Aad,B Abbott,DC Abbott,A Abed Abud,K Abeling,DK Abhayasinghe,SH Abidi,OS AbouZeid,NL Abraham,H Abramowicz,H Abreu,Y Abulaiti,BS Acharya,B Achkar,S Adachi,L Adam,C Adam Bourdarios,L Adamczyk,L Adamek,J Adelman,M Adersberger,A Adiguzel,S Adorni,T Adye,AA Affolder,Y Afik,C Agapopoulou,MN Agaras,A Aggarwal,C Agheorghiesei,JA Aguilar-Saavedra,F Ahmadov,WS Ahmed,X Ai,G Aielli,S Akatsuka,TPA Åkesson,E Akilli,AV Akimov,K Al Khoury,GL Alberghi,J Albert,MJ Alconada Verzini,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,A Alfonsi,F Alfonsi,M Alhroob,B Ali,M Aliev,G Alimonti,C Allaire,BMM Allbrooke,BW Allen,PP Allport,A Aloisio,F Alonso,C Alpigiani,AA Alshehri,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,A Ambler,L Ambroz,C Amelung,D Amidei,SP Amor Dos Santos,S Amoroso,CS Amrouche,F An,C Anastopoulos,N Andari,T Andeen,CF Anders,JK Anders,A Andreazza,V Andrei,CR Anelli,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,E Antipov,M Antonelli,DJA Antrim,F Anulli,M Aoki,JA Aparisi Pozo,L Aperio Bella,JP Araque,V Araujo Ferraz,R Araujo Pereira,C Arcangeletti,ATH Arce,FA Arduh,JF Arguin,S Argyropoulos,J-H Arling,AJ Armbruster,A Armstrong,O Arnaez,H Arnold,ZP Arrubarrena Tame,G Artoni,S Artz,S Asai,T Asawatavonvanich,NA Asbah,EM Asimakopoulou,L Asquith,J Assahsah,K Assamagan,R Astalos,RJ Atkin,M Atkinson,NB Atlay,H Atmani,K Augsten,G Avolio,MK Ayoub,G Azuelos,H Bachacou,K Bachas,M Backes,F Backman,P Bagnaia,H Bahrasemani,AJ Bailey,VR Bailey,JT Baines,C Bakalis,OK Baker,PJ Bakker,D Bakshi Gupta,S Balaji,EM Baldin,P Balek,F Balli,WK Balunas,J Balz,E Banas,A Bandyopadhyay,Sw Banerjee,AAE Bannoura
Journal
Journal of High Energy Physics
Published Date
2023/6
A measurement of the top-quark mass (m t) in the→ lepton+ jets channel is presented, with an experimental technique which exploits semileptonic decays of b-hadrons produced in the top-quark decay chain. The distribution of the invariant mass m ℓμ of the lepton, ℓ (with ℓ= e, μ), from the W-boson decay and the muon, μ, originating from the b-hadron decay is reconstructed, and a binned-template profile likelihood fit is performed to extract m t. The measurement is based on data corresponding to an integrated luminosity of 36.1 fb− 1 of= 13 TeV pp collisions provided by the Large Hadron Collider and recorded by the ATLAS detector. The measured value of the top-quark mass is m t= 174. 41±0. 39 (stat.)±0. 66 (syst.)±0. 25 (recoil) GeV, where the third uncertainty arises from changing the P ythia 8 parton shower gluon-recoil scheme, used in top-quark decays, to a recently developed setup.
K band Josephson traveling wave parametric amplifiers for neutrino mass measurement
Authors
Jennifer Wang,Kaidong Peng,Wouter Van De Pontseele,Katrina Sliwa,Patrick Harrington,Yanjie Qiu,Kyle Serniak,Joseph Formaggio,William Oliver,Kevin O'Brien
Journal
Bulletin of the American Physical Society
Published Date
2023/3/10
Josephson traveling wave parametric amplifier (JTWPAs) are high-gain, broadband, and low-noise quantum amplifiers that are crucial for frequency-multiplexed superconducting qubit readout. They also hold great promise in advancing quantum sensing capabilities across many fields. In collaboration with Project 8, a next-generation neutrino mass experiment which measures the electron cyclotron frequency from tritium beta decay to infer the neutrino mass, we are developing high-frequency JTWPAs centered at 25 GHz. These JTPWAs are predicted to attain 20 dB of gain over a few GHz of bandwidth with approximately 85% quantum efficiency relative to an ideal phase-preserving amplifier, resulting in an order of magnitude better noise performance than that of off-the-shelf HEMT amplifiers. This talk presents simulations of the frequency response and parasitics of high-frequency JTWPA chip designs, as well as …
Search for new phenomena in final states with photons, jets and missing transverse momentum in pp collisions at = 13 TeV with the ATLAS detector
Authors
Georges Aad,B Abbott,DC Abbott,Abud Abed Abud,Kira Abeling,Deshan Kavishka Abhayasinghe,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Y Abulaiti,AC Abusleme Hoffman,BS Acharya,B Achkar,L Adam,C Adam Bourdarios,L Adamczyk,L Adamek,SV Addepalli,J Adelman,Aytül Adiguzel,S Adorni,T Adye,AA Affolder,Y Afik,C Agapopoulou,MN Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,JA Aguilar-Saavedra,A Ahmad,F Ahmadov,WS Ahmed,X Ai,G Aielli,I Aizenberg,S Akatsuka,M Akbiyik,TPA Åkesson,AV Akimov,K Al Khoury,GL Alberghi,J Albert,P Albicocco,MJ Alconada Verzini,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,A Alfonsi,F Alfonsi,M Alhroob,B Ali,S Ali,M Aliev,G Alimonti,C Allaire,BMM Allbrooke,PP Allport,A Aloisio,F Alonso,C Alpigiani,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,A Ambler,L Ambroz,C Amelung,D Amidei,SP Amor Dos Santos,S Amoroso,KR Amos,CS Amrouche,V Ananiev,C Anastopoulos,N Andari,T Andeen,JK Anders,SY Andrean,A Andreazza,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,E Antipov,M Antonelli,DJA Antrim,F Anulli,M Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,N Aranzabal,V Araujo Ferraz,C Arcangeletti,ATH Arce,E Arena,JF Arguin,S Argyropoulos,J-H Arling,AJ Armbruster,A Armstrong,O Arnaez,H Arnold,ZP Arrubarrena Tame,G Artoni,H Asada,K Asai,S Asai,NA Asbah,EM Asimakopoulou,L Asquith,J Assahsah,K Assamagan,R Astalos,RJ Atkin,M Atkinson,NB Atlay,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,VA Austrup,G Avner,G Avolio,MK Ayoub,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,P Bagnaia,H Bahrasemani,AJ Bailey,VR Bailey,JT Baines,C Bakalis,OK Baker,PJ Bakker,E Bakos,D Bakshi Gupta,S Balaji,R Balasubramanian
Journal
Journal of High Energy Physics
Published Date
2023/7
A search for new phenomena has been performed in final states with at least one isolated high-momentum photon, jets and missing transverse momentum in proton–proton collisions at a centre-of-mass energy of= 13 TeV. The data, collected by the ATLAS experiment at the CERN LHC, correspond to an integrated luminosity of 139 fb− 1. The experimental results are interpreted in a supersymmetric model in which pair-produced gluinos decay into neutralinos, which in turn decay into a gravitino, at least one photon, and jets. No significant deviations from the predictions of the Standard Model are observed. Upper limits are set on the visible cross section due to physics beyond the Standard Model, and lower limits are set on the masses of the gluinos and neutralinos, all at 95% confidence level. Visible cross sections greater than 0.022 fb are excluded and pair-produced gluinos with masses up to 2200 GeV are …
Studies of the muon momentum calibration and performance of the ATLAS detector with pp collisions at TeV
Authors
Georges Aad,B Abbott,Kira Abeling,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,AC Abusleme Hoffman,Bobby Samir Acharya,C Adam Bourdarios,L Adamczyk,L Adamek,SV Addepalli,J Adelman,A Adiguzel,S Adorni,T Adye,AA Affolder,Y Afik,MN Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,JA Aguilar-Saavedra,A Ahmad,F Ahmadov,WS Ahmed,S Ahuja,X Ai,G Aielli,M Ait Tamlihat,B Aitbenchikh,I Aizenberg,M Akbiyik,TPA Åkesson,AV Akimov,NN Akolkar,K Al Khoury,GL Alberghi,J Albert,P Albicocco,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,A Alfonsi,F Alfonsi,M Alhroob,B Ali,S Ali,M Aliev,G Alimonti,W Alkakhi,C Allaire,BMM Allbrooke,CA Allendes Flores,PP Allport,A Aloisio,F Alonso,C Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,MG Alviggi,M Aly,Y Amaral Coutinho,A Ambler,C Amelung,M Amerl,CG Ames,D Amidei,SP Amor Dos Santos,KR Amos,V Ananiev,C Anastopoulos,T Andeen,JK Anders,SY Andrean,A Andreazza,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,E Antipov,M Antonelli,DJA Antrim,F Anulli,M Aoki,T Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,C Appelt,N Aranzabal,V Araujo Ferraz,C Arcangeletti,ATH Arce,E Arena,J-F Arguin,S Argyropoulos,J-H Arling,AJ Armbruster,O Arnaez,H Arnold,ZP Arrubarrena Tame,G Artoni,H Asada,K Asai,S Asai,NA Asbah,J Assahsah,K Assamagan,R Astalos,RJ Atkin,M Atkinson,NB Atlay,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,AD Auriol,VA Austrup,G Avner,G Avolio,K Axiotis,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,P Bagnaia,M Bahmani,AJ Bailey,VR Bailey,JT Baines,C Bakalis,OK Baker,E Bakos,D Bakshi Gupta,R Balasubramanian,EM Baldin,P Balek,E Ballabene,F Balli,LM Baltes
Journal
The European Physical Journal C
Published Date
2023/8/1
This paper presents the muon momentum calibration and performance studies for the ATLAS detector based on the pp collisions data sample produced at = 13 TeV at the LHC during Run 2 and corresponding to an integrated luminosity of 139 . An innovative approach is used to correct for potential charge-dependent momentum biases related to the knowledge of the detector geometry, using the resonance. The muon momentum scale and resolution are measured using samples of and events. A calibration procedure is defined and applied to simulated data to match the performance measured in real data. The calibration is validated using an independent sample of events. At the Z peak, the momentum scale is measured with an uncertainty at the 0.05% (0.1%) level, and the resolution is measured with an uncertainty at the 1.5% (2%) level. The charge-dependent …
Krzysztof Sliwa FAQs
What is Krzysztof Sliwa's h-index at Tufts University?
The h-index of Krzysztof Sliwa has been 144 since 2020 and 244 in total.
What are Krzysztof Sliwa's top articles?
The articles with the titles of
MoEDAL search in the CMS beam pipe for magnetic monopoles produced via the Schwinger effect
Search for invisible particles produced in association with single top quarks in proton-proton collisions at =13 TeV with the ATLAS detector
arXiv: MoEDAL search in the CMS beam pipe for magnetic monopoles produced via the Schwinger effect
Search for quantum black hole production in lepton+ jet final states using proton-proton collisions at s= 13 TeV with the ATLAS detector
Measurement of cross sections for production of a Z boson in association with a flavor-inclusive or doubly b-tagged large-radius jet in proton-proton collisions at Formula …
Search for resonant and non-resonant Higgs boson pair production in the decay channel using 13 TeV pp collision data from the ATLAS detector
Differential cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb−1 of ATLAS data
Measurement of the inclusive Formula Presented production cross section in the lepton+ jets channel in pp collisions at Formula Presented with the ATLAS detector using support …
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are the top articles of Krzysztof Sliwa at Tufts University.
What are Krzysztof Sliwa's research interests?
The research interests of Krzysztof Sliwa are: elementary particles, gemetry/topology of universe
What is Krzysztof Sliwa's total number of citations?
Krzysztof Sliwa has 309,874 citations in total.
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