Amanda Cooper-Sarkar

University of Oxford

H-index: 247

Europe-United Kingdom

Description

Amanda Cooper-Sarkar, With an exceptional h-index of 247 and a recent h-index of 150 (since 2020), a distinguished researcher at University of Oxford, specializes in the field of Particle physics.

His recent articles reflect a diverse array of research interests and contributions to the field:

Measurement of the tt¯ cross section and its ratio to the Z production cross section using pp collisions at s= 13.6 TeV with the ATLAS detector

Search for resonant production of dark quarks in the dijet final state with the ATLAS detector

Measurement of the Centrality Dependence of the Dijet Yield in Formula Presented Collisions at Formula Presented with the ATLAS Detector

Search for pair production of squarks or gluinos decaying via sleptons or weak bosons in final states with two same-sign or three leptons with the ATLAS detector

Search for the Zγ decay mode of new high-mass resonances in pp collisions at s= 13 TeV with the ATLAS detector

Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a Z boson in the and final states using 140 fb−1 of data collected …

Search for non-resonant production of semi-visible jets using Run 2 data in ATLAS

Performance and calibration of quark/gluon-jet taggers using 140 fb Of Collisions at TeV with the ATLAS detector

Professor Information

University	University of Oxford
Position	Professor of Physics
Citations(all)	279606
Citations(since 2020)	108896
Cited By	204948
hIndex(all)	247
hIndex(since 2020)	150
i10Index(all)	1273
i10Index(since 2020)	978
Email	Access Email
University Profile Page	University of Oxford

Research & Interests List

Particle physics

Top articles of Amanda Cooper-Sarkar

Measurement of the tt¯ cross section and its ratio to the Z production cross section using pp collisions at s= 13.6 TeV with the ATLAS detector

The inclusive top-quark-pair production cross section σ t t¯ and its ratio to the Z-boson production cross section have been measured in proton–proton collisions at s= 13.6 TeV, using 29 fb− 1 of data collected in 2022 with the ATLAS experiment at the Large Hadron Collider. Using events with an opposite-charge electron-muon pair and b-tagged jets, and assuming Standard Model decays, the top-quark-pair production cross section is measured to be σ t t¯= 850±3 (stat.)±18 (syst.)±20 (lumi.) pb. The ratio of the t t¯ and the Z-boson production cross sections is also measured, where the Z-boson contribution is determined for inclusive e+ e− and μ+ μ− events in a fiducial phase space. The relative uncertainty on the ratio is reduced compared to the t t¯ cross section, thanks to the cancellation of several systematic uncertainties. The result for the ratio, R t t¯/Z= 1.145±0.003 (stat.)±0.021 (syst.)±0.002 (lumi.) is consistent …

Authors

Georges Aad,B Abbott,Kira Abeling,Nils Julius Abicht,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,C Adam Bourdarios,Leszek Adamczyk,SV Addepalli,MJ Addison,Jahred Adelman,Aytül Adiguzel,Tim Adye,AA Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,M Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,TPA Åkesson,AV Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,S Aktas,K Al Khoury,GL Alberghi,J Albert,P Albicocco,GL Albouy,S Alderweireldt,ZL Alegria,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,F Alfonsi,M Algren,M Alhroob,B Ali,HMJ Ali,S Ali,SW Alibocus,M Aliev,G Alimonti,W Alkakhi,C Allaire,BMM Allbrooke,JF Allen,CA Allendes Flores,PP Allport,A Aloisio,F Alonso,C Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,M Alves Cardoso,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,F Anulli,M Aoki,T Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,C Appelt,A Apyan,N Aranzabal,SJ Arbiol Val,C Arcangeletti,ATH Arce,E Arena,JF Arguin,S Argyropoulos,J-H Arling,O Arnaez,H Arnold,G Artoni,H Asada,K Asai,S Asai,NA Asbah,J Assahsah,K Assamagan,R Astalos,S Atashi,RJ Atkin,M Atkinson,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,AD Auriol,VA Austrup,G Avolio,K Axiotis,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,TM Baer,P Bagnaia,M Bahmani,D Bahner,AJ Bailey,VR Bailey,JT Baines,L Baines,OK Baker,E Bakos,D Bakshi Gupta

Journal

Physics Letters B

Published Date

2024/1/1

Search for resonant production of dark quarks in the dijet final state with the ATLAS detector

This paper presents a search for a new resonance decaying into a pair of dark quarks which hadronise into dark hadrons before promptly decaying back as Standard Model particles. This analysis is based on proton-proton collision data recorded at TeV with the ATLAS detector at the Large Hadron Collider between 2015 and 2018, corresponding to an integrated luminosity of 139 fb. After selecting events containing large-radius jets with high track multiplicity, the invariant mass distribution of the two highest-transverse-momentum jets is scanned to look for an excess above a data-driven estimate of the Standard Model multijet background. No significant excess of events is observed and the results are thus used to set 95 % confidence-level upper limits on the production cross-section times branching ratio of the to dark quarks as a function of the mass for various dark-quark scenarios.

Authors

ATLAS collaboration

Journal

arXiv preprint arXiv:2311.03944

Published Date

2023/11/7

Measurement of the Centrality Dependence of the Dijet Yield in Formula Presented Collisions at Formula Presented with the ATLAS Detector

The measurement of hard scatterings in proton-nucleus collisions has resulted in a greater understanding of both the proton and nuclear structure. ATLAS measured the centrality dependence of the dijet yield using 165 nb of +Pb data collected at = 8.16 TeV in 2016. The event centrality, which reflects the +Pb impact parameter, is characterized by the total transverse energy registered in the Pb-going side of the forward calorimeter. The central-to-peripheral ratio of the scaled dijet yields, , is evaluated, and the results are presented as a function of variables that reflect the kinematics of the initial hard parton scattering process. The shows a scaling with the Bjorken- of the parton originating from the proton, , while no such trend is observed as a function of . This analysis provides unique input to understanding the role of small proton spatial configurations in +Pb collisions by covering parton momentum fractions from the valence region down to and .

Authors

Georges Aad,Braden Keim Abbott,Kira Abeling,Nils Julius Abicht,Haider Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,Claire Adam Bourdarios,Leszek Adamczyk,Sagar Addepalli,Matt Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,Tony Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,Malak Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,Torsten Akesson,Andrei Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Zackary Lee Alegria,Martin Aleksa,Igor Alexandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,Hanadi Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,Benedict Allbrooke,Julia Frances Allen,Cristian Andres Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,Manuel Alvarez Estevez,Adrian Alvarez Fernandez,Mario Alves Cardoso,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,Timothy Robert Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,Alexey Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Fabio Anulli,Masato Aoki,Takumi Aoki,Javier Alberto Aparisi Pozo,Marco Aparo,Ludovica Aperio Bella,Christian Appelt,Aram Apyan,Nordin Aranzabal Barrio,Sergio Javier Arbiol Val,Chiara Arcangeletti,Ayana Tamu Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Jihad Assahsah,Ketevi Adikle Assamagan,Robert Astalos,Rose Atashi,Ryan Justin Atkin,Markus Julian Atkinson,Hicham Atmani,Prachi Atmasiddha,Kamil Augsten,Silvia Auricchio,Adrien Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,Karl Filip Backman,Anthony Badea,Paolo Bagnaia,Marzieh Bahmani,Daniel Bahner,Adam Bailey,Virginia Bailey,John Baines,Luke Baines,Keith Baker,Evelin Bakos,Debottam Bakshi Gupta,Veena Balakrishnan,Rahul Balasubramanian

Published Date

2023/9/7

Search for pair production of squarks or gluinos decaying via sleptons or weak bosons in final states with two same-sign or three leptons with the ATLAS detector

A search for pair production of squarks or gluinos decaying via sleptons or weak bosons is reported. The search targets a final state with exactly two leptons with same-sign electric charge or at least three leptons without any charge requirement. The analysed data set corresponds to an integrated luminosity of 139 fb− 1 of proton-proton collisions collected at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC. Multiple signal regions are defined, targeting several SUSY simplified models yielding the desired final states. A single control region is used to constrain the normalisation of the WZ+ jets background. No significant excess of events over the Standard Model expectation is observed. The results are interpreted in the context of several supersymmetric models featuring R-parity conservation or R-parity violation, yielding exclusion limits surpassing those from previous searches. In models …

Authors

Georges Aad,B Abbott,Kira Abeling,Nils Julius Abicht,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,AC Abusleme Hoffman,Bobby Samir Acharya,C Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,SV Addepalli,MJ Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,AA Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,M Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,TPA Åkesson,AV Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Martin Aleksa,IN Aleksandrov,Calin Alexa,Theodoros Alexopoulos,Alice Alfonsi,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,HMJ Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,BMM Allbrooke,Julia Frances Allen,CA Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,M Alves Cardoso,MG Alviggi,Mohamed Aly,Y Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,CG Ames,Dante Amidei,SP Amor Dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,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,Takumi Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,Christian Appelt,Aram Apyan,N Aranzabal,Chiara Arcangeletti,ATH Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,J-H Arling,Olivier Arnaez,Hannah Arnold,ZP Arrubarrena Tame,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,K Assamagan,R Astalos,S Atashi,RJ Atkin,M Atkinson,NB Atlay,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,AD Auriol,VA Austrup,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,L Baines,C Bakalis,OK Baker,E Bakos,D Bakshi Gupta

Journal

Journal of High Energy Physics

Published Date

2024/2

Search for the Zγ decay mode of new high-mass resonances in pp collisions at s= 13 TeV with the ATLAS detector

This letter presents a search for narrow, high-mass resonances in the Zγ final state with the Z boson decaying into a pair of electrons or muons. The s= 13 TeV pp collision data were recorded by the ATLAS detector at the CERN Large Hadron Collider and have an integrated luminosity of 140 fb− 1. The data are found to be in agreement with the Standard Model background expectation. Upper limits are set on the resonance production cross section times the decay branching ratio into Zγ. For spin-0 resonances produced via gluon–gluon fusion, the observed limits at 95% confidence level vary between 65.5 fb and 0.6 fb, while for spin-2 resonances produced via gluon–gluon fusion (or quark–antiquark initial states) limits vary between 77.4 (76.1) fb and 0.6 (0.5) fb, for the mass range from 220 GeV to 3400 GeV.

Authors

Georges Aad,B Abbott,Kira Abeling,Nils Julius Abicht,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,C Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,SV Addepalli,MJ Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,AA Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,M Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,TPA Åkesson,AV Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Martin Aleksa,IN Aleksandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,HMJ Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,BMM Allbrooke,Julia Frances Allen,CA Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,M Alves Cardoso,MG Alviggi,Mohamed Aly,Y Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,CG Ames,Dante Amidei,SP Amor Dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,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,Fabio Anulli,Masato Aoki,Takumi Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,Christian Appelt,Aram Apyan,N Aranzabal,Chiara Arcangeletti,ATH Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,J-H Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Jihad Assahsah,K Assamagan,Robert Astalos,S Atashi,Ryan Justin Atkin,M Atkinson,Hicham Atmani,PA Atmasiddha,Kamil Augsten,Silvia Auricchio,AD Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,F Backman,Anthony Badea,Paolo Bagnaia,Marzieh Bahmani,AJ Bailey,VR Bailey,JT Baines,Luke Baines,Christos Bakalis,OK Baker,Evelin Bakos,D Bakshi Gupta,Veena Balakrishnan,Rahul Balasubramanian,EM Baldin

Journal

Physics Letters B

Published Date

2024/1/1

Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a Z boson in the and final states using 140 fb−1 of data collected …

A search for a heavy CP-odd Higgs boson, A, decaying into a Z boson and a heavy CP-even Higgs boson, H, is presented. It uses the full LHC Run 2 dataset of pp collisions at s= 13 TeV collected with the ATLAS detector, corresponding to an integrated luminosity of 140 fb− 1. The search for A→ ZH is performed in the ℓ+ ℓ− tt and ννbb final states and surpasses the reach of previous searches in different final states in the region with mH> 350 GeV and mA> 800 GeV. No significant deviation from the Standard Model expectation is found. Upper limits are placed on the production cross-section times the decay branching ratios. Limits with less model dependence are also presented as functions of the reconstructed m (tt) and m (bb) distributions in the ℓ+ ℓ− tt and ννbb channels, respectively. In addition, the results are interpreted in the context of two-Higgs-doublet models.

Authors

G Aad,B Abbott,K Abeling,NJ Abicht,SH Abidi,A Aboulhorma,H Abramowicz,H Abreu,Y Abulaiti,BS Acharya,C Adam Bourdarios,L Adamczyk,SV Addepalli,MJ Addison,J Adelman,A Adiguzel,T Adye,AA Affolder,Y Afik,MN Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,A Ahmad,F Ahmadov,WS Ahmed,S Ahuja,X Ai,G Aielli,A Aikot,M Ait Tamlihat,B Aitbenchikh,I Aizenberg,M Akbiyik,TPA Åkesson,AV Akimov,D Akiyama,NN Akolkar,S Aktas,K Al Khoury,GL Alberghi,J Albert,P Albicocco,GL Albouy,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,F Alfonsi,M Algren,M Alhroob,B Ali,HMJ Ali,S Ali,SW Alibocus,M Aliev,G Alimonti,W Alkakhi,C Allaire,BMM Allbrooke,JF Allen,CA Allendes Flores,PP Allport,A Aloisio,F Alonso,C Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,M Alves Cardoso,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,F Anulli,M Aoki,T Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,C Appelt,A Apyan,N Aranzabal,SJ Arbiol Val,C Arcangeletti,ATH Arce,E Arena,JF Arguin,S Argyropoulos,J-H Arling,O Arnaez,H Arnold,G Artoni,H Asada,K Asai,S Asai,NA Asbah,K Assamagan,R Astalos,S Atashi,RJ Atkin,M Atkinson,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,AD Auriol,VA Austrup,G Avolio,K Axiotis,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,TM Baer,P Bagnaia,M Bahmani,AJ Bailey,VR Bailey,JT Baines,L Baines,OK Baker,E Bakos,D Bakshi Gupta,V Balakrishnan,R Balasubramanian,EM Baldin

Published Date

2024/2/26

Search for non-resonant production of semi-visible jets using Run 2 data in ATLAS

Semi-visible jets, with a significant contribution to the event's missing transverse momentum, can arise in strongly interacting dark sectors. This results in an event topology where one of the jets can be aligned with the direction of the missing transverse momentum. The first search for semi-visible jets produced via a t-channel mediator exchange is presented. The analysis uses proton-proton collisions with an integrated luminosity of 139 fb−1 and a centre-of-mass energy of 13 TeV, collected with the ATLAS detector during the Run 2 of the LHC. No excess over Standard Model predictions is observed. Assuming a coupling strength of unity between the mediator, a Standard Model quark and a dark quark, mediator masses up to 2.7 TeV are excluded at the 95% confidence level. Upper limits on the coupling strength are also derived.

Authors

Georges Aad,B Abbott,Kira Abeling,Nils Julius Abicht,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,AC Abusleme Hoffman,Bobby Samir Acharya,C Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,SV Addepalli,MJ Addison,Jahred Adelman,Aytül Adiguzel,Tim Adye,AA Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,M Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,TPA Åkesson,AV Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Martin Aleksa,IN Aleksandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,HMJ Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,BMM Allbrooke,Julia Frances Allen,CA Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,M Alves Cardoso,MG Alviggi,Mohamed Aly,Y Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,CG Ames,Dante Amidei,SP Amor Dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,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,Fabio Anulli,Masato Aoki,Takumi Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,Christian Appelt,Aram Apyan,N Aranzabal,Chiara Arcangeletti,ATH Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,J-H Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Jihad Assahsah,K Assamagan,Robert Astalos,S Atashi,Ryan Justin Atkin,M Atkinson,Hicham Atmani,PA Atmasiddha,Kamil Augsten,Silvia Auricchio,AD Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,F Backman,Anthony Badea,Paolo Bagnaia,Marzieh Bahmani,AJ Bailey,VR Bailey,JT Baines,Luke Baines,Christos Bakalis,OK Baker,Evelin Bakos,D Bakshi Gupta,Veena Balakrishnan,Rahul Balasubramanian

Journal

Physics Letters B

Published Date

2024/1/1

Performance and calibration of quark/gluon-jet taggers using 140 fb Of Collisions at TeV with the ATLAS detector

The identification of jets originating from quarks and gluons, often referred to as quark/gluon tagging, plays an important role in various analyses performed at the Large Hadron Collider, as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced background. This paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration, using TeV proton–proton collision data with an integrated luminosity of 140 fb collected by the ATLAS experiment. Two taggers with high performances in rejecting jets from gluon over jets from quarks are studied: one tagger is based on requirements on the number of inner-detector tracks associated with the jet, and the other combines several jet substructure observables using a boosted decision tree. A method is established to determine the quark/gluon fraction in data, by using quark/gluon-enriched subsamples defined by the jet pseudorapidity. Differences in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points.

Authors

Georges Aad,Braden Abbott,Kira Abeling,Nils Julius Abicht,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,C Adam Bourdarios,Leszek Adamczyk,SV Addepalli,MJ Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,AA Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,M Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,TPA Åkesson,AV Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Martin Aleksa,IN Aleksandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,HMJ Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,BMM Allbrooke,Julia Frances Allen,CA Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,M Alves Cardoso,MG Alviggi,Mohamed Aly,Y Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,CG Ames,Dante Amidei,SP Amor Dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,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,Fabio Anulli,Masato Aoki,Takumi Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,Christian Appelt,Aram Apyan,N Aranzabal,SJ Arbiol Val,Chiara Arcangeletti,ATH Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Jihad Assahsah,Ketevi Assamagan,Robert Astalos,S Atashi,Ryan Justin Atkin,M Atkinson,Hicham Atmani,PA Atmasiddha,Kamil Augsten,Silvia Auricchio,AD Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,F Backman,Anthony Badea,Paolo Bagnaia,Marzieh Bahmani,AJ Bailey,VR Bailey,JT Baines,Luke Baines,OK Baker,Evelin Bakos,D Bakshi Gupta,Veena Balakrishnan,Rahul Balasubramanian,EM Baldin,Petr Balek

Journal

Chinese physics C

Published Date

2024/2/1

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