Saul Youssef
Boston University
H-index: 193
North America-United States
About Saul Youssef
Saul Youssef, With an exceptional h-index of 193 and a recent h-index of 136 (since 2020), a distinguished researcher at Boston University, specializes in the field of Physics, Mathematics, Computing.
His recent articles reflect a diverse array of research interests and contributions to the field:
The impact of anticoagulant medications on fragility femur fracture care: The hip and femoral fracture anticoagulation surgical timing evaluation (HASTE) study
Lack of regional pathways impact on surgical delay: Analysis of the Orthopaedic Trauma Hospital Outcomes–Patient Operative Delays (ORTHOPOD) study
ORthopaedic trauma hospital outcomes-Patient operative delays (ORTHOPOD) Study: The management of day-case orthopaedic trauma in the United Kingdom
Pure Data Foundation of Mathematics and Computing
Care of patients with ST-elevation myocardial infarction: an international analysis of quality indicators in the acute coronary syndrome STEMI Registry of the EURObservational …
Search for type-III seesaw heavy leptons in leptonic final states in pp collisions at√ s= 13 TeV with the ATLAS detector
SARS-CoV-2 infection and venous thromboembolism after surgery: an international prospective cohort study.
Luminosity determination in collisions at TeV using the ATLAS detector at the LHC
Saul Youssef Information
University | Boston University |
|---|---|
Position | Research Associate Professor |
Citations(all) | 263679 |
Citations(since 2020) | 105806 |
Cited By | 180168 |
hIndex(all) | 193 |
hIndex(since 2020) | 136 |
i10Index(all) | 860 |
i10Index(since 2020) | 638 |
University Profile Page | Boston University |
Saul Youssef Skills & Research Interests
Physics
Mathematics
Computing
Top articles of Saul Youssef
The impact of anticoagulant medications on fragility femur fracture care: The hip and femoral fracture anticoagulation surgical timing evaluation (HASTE) study
Authors
MM Farhan-Alanie,R Chinweze,R Walker,WGP Eardley,Matthew Smith,Andrel Yoong,Jun Wei Lim,Omar Yousef,Stephen McDonald,Chinga Chileshe,Camilla Ramus,Christopher Clements,Liam Barrett,Oliver Rockall,Rahul Geetala,Saif Ul Islam,Ahmad Nasar,Kieran Almond,Ladan Fatima Yusuf Hassan,Sohan Shah,Robert Bruce Brand,Bakhat Yawar,Catherine Gilmore,Daryl McAuley,Waleed Khan,Padmanabhan Subramanian,Aashish Ahluwalia,Leyla Ozbek,Prashant Awasthi,Hassaan Sheikh,Sarah Barkley,Toni Ardolino,Alexander Denning,Gaj Thiruchandran,Hossam Fraig,Omar Salim,Rabia Iqbal,Stephen Guy,Jack Hogg,Oliver Bagshaw,Samir Asmar,Stephen Mitchell,Fang Quek,James Fletcher,Jonathan French,Selina Graham,Philip Sloper,Hammad Sadique,Valentina Matera,Zain Sohail,Justin Wei Leong,Fares Issa,Lauren Greasley,Samuel Marsden,Lucy Parry,Syed Mannan,Humayoon Zaheen,Peter Moriarty,William Manning,Timothy Morris,Carole Brockbanks,Peter Ward,Kim Pearce,Louise McMenemy,Mohamed Mahmoud,Will Kieffer,Aayush Lal,Justin Collis,Karthik Chandrasekaran,Michael Foxall-Smith,Marjan Raad,Peter Kempshall,Jocelyn Cheuk,Sam Leckey,Rishav Gupta,Daniel Engelke,Mark Kemp,Aakaash Venkatesan,Adnan Hussain,Michiel Simons,Ram Mohan Raghavendra,Satish Rohra,Sunny Deo,Ferenc Vasarhelyi,Claire Thelwall,Krista Cullen,Bilal Al-Obaidi,Adam Fell,Ahmad Thaumeen,Maria Dadabhoy,Mira Ali,Sameer Ijaz,David Lin,Basharat Khan,Mohamed Alsonbaty,Moritz Lebe,Ravi Kant Millan,Sam Imam,Emma Theobald,Jonathan Cormack,Lokesh Sharoff,Will Eаrdley,Rathan Jeyapalan,Liam Alcock,Julia Clayton,Natalie Bates,Yousif Mahmoud,Alex Osborne,Shvaita Ralhan,Catriona Carpenter,Mahmood Ahmad,Sanjeev Musuvathy Ravi,Tarek Konbaz,Thomas Lloyd,Nomaan Sheikh,Ahmed Swealem,Emma Soroya,Faizal Rayan,Thomas Ward,Aswinkumar Vasireddy,Ellisiv Clarke,Oishi Sikdar,Yat Wing Smart,Joseph Windley,Belen Ilagan,Edel Brophy,Sarah Joseph,Kathryn Lowery,Ammer Jamjoom,Ghiath Ismayl,Randeep Aujla,Sharan Sambhwani,Arul Ramasamy,Ahmed Khalaf,Nikhil Ponugoti,Wai Huang Teng,Saqib Masud,Eghe Otoibhili,Martin Clarkson,Mohamed Nafea,Mohamed Sarhan,Shady Hanna,Andrew Kelly,Alex Curtis,Lysander Gourbault,Mariam Tarhini,Nicholas Platt,Thomas Fleming,Gopalakrishna Pemmaraju,Mohammed Junaid Choudri
Journal
Injury
Published Date
2024/6/1
IntroductionDue to their hypocoagulable state on presentation, anticoagulated patients with femoral fragility fractures typically experience delays to surgery. There are no large, multicentre studies previously carried out within the United Kingdom (UK) evaluating the impact of anticoagulant use in this patient population. This study aimed to evaluate the current epidemiology and compare the perioperative management of anticoagulated and non-anticoagulated femoral fragility fracture patients.MethodsData was prospectively collected through a collaborative, multicentre approach involving hospitals across the United Kingdom. Femoral fragility fracture patients aged ≥60 years and admitted to hospital between 1st May to 31st July 2023 were included. Main outcomes under investigation included time to surgery, receipt of blood transfusion between admission and 48 hours following surgery, length of stay, and 30-day …
Lack of regional pathways impact on surgical delay: Analysis of the Orthopaedic Trauma Hospital Outcomes–Patient Operative Delays (ORTHOPOD) study
Authors
Hussam Elamin Ahmed,Thomas Baldock,Nicholas Wei,Thomas Walshaw,Reece Walker,Alex Trompeter,Sharon Scott,William GP Eardley,Iain Stevenson,Andrel Yoong,Iain Rankin,James Dixon,Jun Wei Lim,Mariam Sattar,Stephen McDonald,Helen Davies,Louise Jones,Michelle Nolan,Rebecca McGinty,Helene Stevenson,David Bowe,Francis Sim,James Vun,Ritchie Strain,Vasileios Giannoudis,Christopher Talbot,Christopher Gunn,Ha Phuong Do Le,Matthew Bradley,William Lloyd,Brian Hanratty,Yizhe Lim,Steven Brookes-Fazakerley,Amir Varasteh,Jonathan Francis,Nameer Choudhry,Sheraz Malik,Amit Vats,Ashish Evans,Madeleine Garner,Stratton King,Mohamed Zbaeda,Owen Diamond,Gavin Baker,Richard Napier,Stephen Guy,Gordon McCauley,Samuel King,Gray Edwards,Benjamin Lin,Kaveh Davoudi,Samuel Haines,Manav Raghuvanshi,Pranai Buddhdev,Edward Karam,Enoch Nimmyel,George Ekanem,Razaq Lateef,JS Jayadeep,Ian Crowther,Karolina Mazur,Nauman Hafiz,Umair Khan,Krissen Chettiar,Amr Ibrahim,Prasanth Gopal,Shannon Tse,Raj Lakshmipathy,Claudia Towse,Hashim Al-Musawi,Matthew Walmsley,Will Aspinall,James Metcalfe,Aliabbas Moosa,George Crome,Mohamed Abdelmonem,Sathya Lakpriya,Amanda Hawkins,Dominic Waugh,Matthew Kennedy,Mohamed Elsagheir,Will Kieffer,Adekinte Oyekan,Justin Collis,Marjan Raad,Pramin Raut,Markus Baker,Alexander Gorvett,Hannah Gleeson,John Fahmy,Sam Walters,Craig Tinning,Abhishek Chaturvedi,Heather Russell,Osama Alsawada,Robert Sinnerton,Evan Crane,Catherine Warwick,Lucia Dimascio,Taegyeong Tina Ha,Thomas King,Daniel Engelke,Matthew Chan,Rajesh Gopireddy,Sunny Deo,Ferenc Vasarhelyi,Jasmeet Jhaj,Kostas Dogramatzis,Sarah McCartney,Toni Ardolino,Hossam Fraig,Ryan Hiller-Smith,Benjamin Haughton,Heather Greenwood,Nicola Stephenson,Yuki Chong,Graham Sleat,Farid Saedi,Joe Gouda,Sanjeev Musuvathy Ravi,Shwan Henari,Sam Imam,Charles Howell,Emma Theobald,Jan Wright,Jonathan Cormack,Karlou Borja,Sandy Wood,Amulya Khatri,Chris Bretherton,Charlotte Tunstall,Kathryn Lowery,Benjamin Holmes,Jennifer Nichols,Beibit Bashabayev,Clare Wildin,Rajesh Sofat,Aarthi Thiagarajan,Karim Abdelghafour,James Nicholl,Ahmed Abdulhameed,Kathryn Duke,Lucy Maling,Matthew McCann,Saqib Masud,James Marshman,Joshua Moreau,Kanwalnaini Cheema,Peter Morad Rageeb,Yusuf Mirza
Journal
Injury
Published Date
2023/12/1
IntroductionCurrent practice following injury within the United Kingdom is to receive surgery, at the institution of first contact regardless of ability to provide timely intervention and inconsiderate of neighbouring hospital resource and capacity. This can lead to a mismatch of demand and capacity, delayed surgery and stress within hospital systems, particularly with regards to elective services. We demonstrate through a multicentre, multinational study, the impact of this at scale.MethodologyORTHOPOD data collection period was between 22/08/2022 and 16/10/2022 and consisted of two arms. Arm 1 captured orthopaedic trauma caseload and capacity in terms of sessions available per centre and patients awaiting surgery per centre per given week. Arm 2 recorded patient and injury demographics, time of decision making, outpatient and inpatient timeframes as well as time to surgery. Hand and spine cases were …
ORthopaedic trauma hospital outcomes-Patient operative delays (ORTHOPOD) Study: The management of day-case orthopaedic trauma in the United Kingdom
Authors
Nicholas Wei,Thomas E Baldock,Hussam Elamin-Ahmed,Thomas Walshaw,Reece Walker,Alex Trompeter,William PG Eardley,Iain Stevenson,Andrel Yoong,Iain Rankin,James Dixon,Jun Wei Lim,Mariam Sattar,Stephen McDonald,Sharon Scott,Helen Davies,Louise Jones,Michelle Nolan,Rebecca McGinty,Helene Stevenson,David Bowe,Francis Sim,James Vun,Ritchie Strain,Vasileios Giannoudis,Christopher Talbot,Christopher Gunn,Ha Phuong Do Le,Matthew Bradley,William Lloyd,Brian Hanratty,Yizhe Lim,Steven Brookes-Fazakerley,Amir Varasteh,Jonathan Francis,Nameer Choudhry,Sheraz Malik,Amit Vats,Ashish Evans,Madeleine Garner,Stratton King,Mohamed Zbaeda,Owen Diamond,Gavin Baker,Richard Napier,Stephen Guy,Gordon McCauley,Samuel King,Gray Edwards,Benjamin Lin,Kaveh Davoudi,Samuel Haines,Manav Raghuvanshi,Pranai Buddhdev,Edward Karam,Enoch Nimmyel,George Ekanem,Razaq Lateef,JS Jayadeep,Ian Crowther,Karolina Mazur,Nauman Hafiz,Umair Khan,Krissen Chettiar,Amr Ibrahim,Prasanth Gopal,Shannon Tse,Raj Lakshmipathy,Claudia Towse,Hashim Al-Musawi,Matthew Walmsley,Will Aspinall,James Metcalfe,Aliabbas Moosa,George Crome,Mohamed Abdelmonem,Sathya Lakpriya,Amanda Hawkins,Dominic Waugh,Matthew Kennedy,Mohamed Elsagheir,Will Kieffer,Adekinte Oyekan,Justin Collis,Marjan Raad,Pramin Raut,Markus Baker,Alexander Gorvett,Hannah Gleeson,John Fahmy,Sam Walters,Craig Tinning,Abhishek Chaturvedi,Heather Russell,Osama Alsawada,Robert Sinnerton,Evan Crane,Catherine Warwick,Lucia Dimascio,Taegyeong Tina Ha,Thomas King,Daniel Engelke,Matthew Chan,Rajesh Gopireddy,Sunny Deo,Ferenc Vasarhelyi,Jasmeet Jhaj,Kostas Dogramatzis,Sarah McCartney,Toni Ardolino,Hossam Fraig,Ryan Hiller-Smith,Benjamin Haughton,Heather Greenwood,Nicola Stephenson,Yuki Chong,Graham Sleat,Farid Saedi,Joe Gouda,Sanjeev Musuvathy Ravi,Shwan Henari,Sam Imam,Charles Howell,Emma Theobald,Jan Wright,Jonathan Cormack,Karlou Borja,Sandy Wood,Amulya Khatri,Chris Bretherton,Charlotte Tunstall,Kathryn Lowery,Benjamin Holmes,Jennifer Nichols,Beibit Bashabayev,Clare Wildin,Rajesh Sofat,Aarthi Thiagarajan,Karim Abdelghafour,James Nicholl,Ahmed Abdulhameed,Kathryn Duke,Lucy Maling,Matthew McCann,Saqib Masud,James Marshman,Joshua Moreau,Kanwalnaini Cheema,Peter Morad Rageeb,Yusuf Mirza
Journal
Injury
Published Date
2023/6/1
IntroductionORTHOPOD: Day Case Trauma is a multicentre prospective service evaluation of day-case trauma surgery across four countries. It is an epidemiological assessment of injury burden, patient pathways, theatre capacity, time to surgery and cancellation. It is the first evaluation of day-case trauma processes and system performance at nationwide scale.MethodsData was prospectively recorded through a collaborative approach. Arm one captured weekly caseload burden and operating theatre capacity. Arm two detailed patient and injury demographics, and time to surgery for specific injury groups. Patients scheduled for surgery between 22/08/22 and 16/10/22 and operated on before 31/10/22, were included. For this analysis, hand and spine injuries were excluded.ResultsData was obtained from 86 Data Access Groups (70 in England, 2 in Wales, 10 in Scotland and 4 in Northern Ireland). After exclusions …
Pure Data Foundation of Mathematics and Computing
Authors
Saul Youssef
Journal
arXiv preprint arXiv:2305.05507
Published Date
2023/5/9
We propose an axiomatic foundation of mathematics based on the finite sequence as the foundational concept, rather than based on logic and set, as in set theory, or based on type as in dependent type theories. Finite sequences lead to a concept of pure data, which is used to represent all mathematical objects. As an axiomatic system, the foundation has only one axiom which defines what constitutes a valid definition. Using the axiom, an internal true/false/undecided valued logic and an internal language are defined, making logic and language-related axioms unnecessary. Valid proof and valid computation are defined in terms of equality of pure data. An algebra of pure data leads to a rich theory of spaces and morphisms which play a role similar to the role of Category Theory in modern Mathematics. As applications, we explore Mathematical Machine Learning, the consistency of Mathematics and address paradoxes due to Godel, Berry, Curry and Yablo.
Care of patients with ST-elevation myocardial infarction: an international analysis of quality indicators in the acute coronary syndrome STEMI Registry of the EURObservational …
Authors
Peter Ludman,Uwe Zeymer,Nicolas Danchin,Petr Kala,Cécile Laroche,Masoumeh Sadeghi,Roberto Caporale,Sameh Mohamed Shaheen,Jacek Legutko,Zaza Iakobishvili,Khalid F Alhabib,Zuzana Motovska,Martin Studencan,Jorge Mimoso,David Becker,Dimitrios Alexopoulos,Zviad Kereseselidze,Sinisa Stojkovic,Parounak Zelveian,Artan Goda,Erkin Mirrakhimov,Gani Bajraktari,Hasan Ali Farhan,Pranas Šerpytis,Bent Raungaard,Toomas Marandi,Alice May Moore,Martin Quinn,Pasi Paavo Karjalainen,Gabriel Tatu-Chitoiu,Chris P Gale,Aldo P Maggioni,Franz Weidinger
Published Date
2023/1/5
Aims To use quality indicators to study the management of ST-segment elevation myocardial infarction (STEMI) in different regions. Methods and results Prospective cohort study of STEMI within 24 h of symptom onset (11 462 patients, 196 centres, 26 European Society of Cardiology members, and 3 affiliated countries). The median delay between arrival at a percutaneous cardiovascular intervention (PCI) centre and primary PCI was 40 min (interquartile range 20–74) with 65.8% receiving PCI within guideline recommendation of 60 min. A third of patients (33.2%) required transfer from their initial hospital to one that could perform emergency PCI for whom only 27.2% were treated within the quality indicator recommendation of 120 min. Radial access was used in 56.6% of all primary PCI, but with large geographic variation, from 76.4 to 9.1%. Statins were prescribed at discharge …
Search for type-III seesaw heavy leptons in leptonic final states in pp collisions at√ s= 13 TeV with the ATLAS detector
Authors
M Aaboud,G Aad,B Abbott,A Aggarwal,S Caron,L Colasurdo,V Fabiani,CA Gottardo,P Moskvitina,CJM Nellist,L Pedraza Diaz
Published Date
2022
A search for the pair production of heavy leptons as predicted by the type-III seesaw mechanism is presented. The search uses proton–proton collision data at a centre-ofmass energy of 13 TeV, corresponding to 139 fb− 1 of integrated luminosity recorded by the ATLAS detector during Run 2 of the Large Hadron Collider. The analysis focuses on final states with three or four electrons or muons from the possible decays of new heavy leptons via intermediate electroweak bosons. No significant deviations above the Standard Model expectation are observed; upper and lower limits on the heavy lepton production cross-section and masses are derived respectively. These results are then combined for the first time with the ones already published by ATLAS using the channel with two leptons in the final state. The observed lower limit on the mass of the type-III seesaw heavy leptons combining two, three and four lepton channels together is 910 GeV at the 95% confidence level.
SARS-CoV-2 infection and venous thromboembolism after surgery: an international prospective cohort study.
Authors
Collaborative COVIDSurg,Collaborative GlobalSurg
Journal
Anaesthesia
Published Date
2022
SARS-CoV-2 has been associated with an increased rate of venous thromboembolism in critically ill patients. Since surgical patients are already at higher risk of venous thromboembolism than general populations, this study aimed to determine if patients with peri-operative or prior SARS-CoV-2 were at further increased risk of venous thromboembolism. We conducted a planned sub-study and analysis from an international, multicentre, prospective cohort study of elective and emergency patients undergoing surgery during October 2020. Patients from all surgical specialties were included. The primary outcome measure was venous thromboembolism (pulmonary embolism or deep vein thrombosis) within 30 days of surgery. SARS-CoV-2 diagnosis was defined as peri-operative (7 days before to 30 days after surgery); recent (1-6 weeks before surgery); previous (≥7 weeks before surgery); or none. Information on prophylaxis regimens or pre-operative anti-coagulation for baseline comorbidities was not available. Postoperative venous thromboembolism rate was 0.5% (666/123,591) in patients without SARS-CoV-2; 2.2% (50/2317) in patients with peri-operative SARS-CoV-2; 1.6% (15/953) in patients with recent SARS-CoV-2; and 1.0% (11/1148) in patients with previous SARS-CoV-2. After adjustment for confounding factors, patients with peri-operative (adjusted odds ratio 1.5 (95%CI 1.1-2.0)) and recent SARS-CoV-2 (1.9 (95%CI 1.2-3.3)) remained at higher risk of venous thromboembolism, with a borderline finding in previous SARS-CoV-2 (1.7 (95%CI 0.9-3.0)). Overall, venous thromboembolism was independently associated with 30-day …
Luminosity determination in collisions at TeV using the ATLAS detector at the LHC
Authors
ATLAS Collaboration
Published Date
2022/12/20
A precise measurement of the integrated luminosity is a key component of the ATLAS physics programme at the CERN Large Hadron Collider (LHC), in particular for cross-section measurements where it is often one of the leading sources of uncertainty. Searches for new physics phenomena beyond those predicted by the Standard Model also often require accurate estimates of the luminosity to determine background levels and sensitivity. This paper describes the measurement of the luminosity of the proton–proton (????????) collision data sample delivered to the ATLAS detector at a centre-of-mass energy of
Search for Higgs boson decays into a pair of pseudoscalar particles in the final state with the ATLAS detector in collisions at
Authors
Georges Aad,B Abbott,DC Abbott,A 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,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,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,EM Baldin
Journal
Physical Review D
Published Date
2022/1/11
This paper presents a search for decays of the Higgs boson with a mass of 125 GeV into a pair of new pseudoscalar particles, H→ a a, where one a-boson decays into a b-quark pair and the other into a muon pair. The search uses 139 fb− 1 of proton-proton collision data at a center-of-mass energy of s= 13 TeV recorded between 2015 and 2018 by the ATLAS experiment at the LHC. A narrow dimuon resonance is searched for in the invariant mass spectrum between 16 GeV and 62 GeV. The largest excess of events above the Standard Model backgrounds is observed at a dimuon invariant mass of 52 GeV and corresponds to a local (global) significance of 3.3 σ (1.7 σ). Upper limits at 95% confidence level are placed on the branching ratio of the Higgs boson to the b b μ μ final state, B (H→ a a→ b b μ μ), and are in the range 0.2–4.0× 10− 4, depending on the signal mass hypothesis.
Search for neutral long-lived particles in collisions at TeV that decay into displaced hadronic jets in the ATLAS calorimeter
Authors
Atlas Collaboration
Journal
arXiv preprint arXiv:2203.01009
Published Date
2022/3/2
A search for decays of pair-produced neutral long-lived particles (LLPs) is presented using 139 fb of proton-proton collision data collected by the ATLAS detector at the LHC in 2015-2018 at a centre-of-mass energy of 13 TeV. Dedicated techniques were developed for the reconstruction of displaced jets produced by LLPs decaying hadronically in the ATLAS hadronic calorimeter. Two search regions are defined for different LLP kinematic regimes. The observed numbers of events are consistent with the expected background, and limits for several benchmark signals are determined. For a SM Higgs boson with a mass of 125 GeV, branching ratios above 10% are excluded at 95% confidence level for values of times LLP mean proper lifetime in the range between 20 mm and 10 m depending on the model. Upper limits are also set on the cross-section times branching ratio for scalars with a mass of 60 GeV and for masses between 200 GeV and 1 TeV.
Search for Higgs boson pair production in the two bottom quarks plus two photons final state in collisions at with the ATLAS detector
Authors
Georges Aad,Brad Abbott,Dale C Abbott,A Abed Abud,Kira Abeling,Deshan Kavishka Abhayasinghe,Syed Haider Abidi,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,AC Abusleme Hoffman,Bobby Samir Acharya,Baida Achkar,Lennart Adam,C Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,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,Shunichi Akatsuka,Melike Akbiyik,TPA Åkesson,AV Akimov,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,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,Cherifa Sabrina Amrouche,Christos Anastopoulos,Nansi Andari,T Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Victor Andrei,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,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,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
Journal
Physical Review D
Published Date
2022/9/6
Searches are performed for nonresonant and resonant di-Higgs boson production in the b b γ γ final state. The dataset used corresponds to an integrated luminosity of 139 fb− 1 of proton–proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. No excess above the expected background is found and upper limits on the di-Higgs boson production cross sections are set. A 95% confidence-level upper limit of 4.2 times the cross section predicted by the Standard Model is set on p p→ H H nonresonant production, where the expected limit is 5.7 times the Standard Model predicted value. The expected constraints are obtained for a background hypothesis excluding p p→ H H production. The observed (expected) constraints on the Higgs boson trilinear coupling modifier κ λ are determined to be [− 1.5, 6.7]([− 2.4, 7.7]) at 95% confidence level, where the …
Measurement of the nuclear modification factor for muons from charm and bottom hadrons in Pb+ Pb collisions at 5.02 TeV with the ATLAS detector
Authors
Georges Aad,B Abbott,DC Abbott,A Abed Abud,Kira Abeling,Deshan Kavishka Abhayasinghe,SH Abidi,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,Cherifa Sabrina Amrouche,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,J-H 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,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,E Ballabene
Journal
Physics Letters B
Published Date
2022/6/10
Heavy-flavour hadron production provides information about the transport properties and microscopic structure of the quark–gluon plasma created in ultra-relativistic heavy-ion collisions. A measurement of the muons from semileptonic decays of charm and bottom hadrons produced in Pb+ Pb and pp collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV with the ATLAS detector at the Large Hadron Collider is presented. The Pb+ Pb data were collected in 2015 and 2018 with sampled integrated luminosities of 208 μ b− 1 and 38 μ b− 1, respectively, and pp data with a sampled integrated luminosity of 1.17 pb− 1 were collected in 2017. Muons from heavy-flavour semileptonic decays are separated from the light-flavour hadronic background using the momentum imbalance between the inner detector and muon spectrometer measurements, and muons originating from charm and bottom decays are …
Measurements of the Higgs boson inclusive and differential fiducial cross-sections in the diphoton decay channel with pp collisions at = 13 TeV with the ATLAS …
Authors
Georges Aad,Brad Abbott,Dale C Abbott,Adam Abed Abud,Kira Abeling,Deshan Kavishka Abhayasinghe,Syed Haider 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,Aytül Adiguzel,S Adorni,Tim 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
2022/8
A measurement of inclusive and differential fiducial cross-sections for the production of the Higgs boson decaying into two photons is performed using 139 fb− 1 of proton-proton collision data recorded at= 13 TeV by the ATLAS experiment at the Large Hadron Collider. The inclusive cross-section times branching ratio, in a fiducial region closely matching the experimental selection, is measured to be 67±6 fb, which is in agreement with the state-of-the-art Standard Model prediction of 64±4 fb. Extrapolating this result to the full phase space and correcting for the branching ratio, the total cross-section for Higgs boson production is estimated to be 58±6 pb. In addition, the cross-sections in four fiducial regions sensitive to various Higgs boson production modes and differential cross-sections as a function of either one or two of several observables are measured. All the measurements are found to be in agreement …
Determination of the parton distribution functions of the proton using diverse ATLAS data from pp collisions at , 8 and 13 TeV
Authors
Georges Aad,B Abbott,DC Abbott,A 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,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,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,AJ Bailey,VR Bailey,JT Baines,C Bakalis,OK Baker,PJ Bakker,E Bakos,D Bakshi Gupta,S Balaji,R Balasubramanian,EM Baldin
Journal
The European Physical Journal C
Published Date
2022/5/13
This paper presents an analysis at next-to-next-to-leading order in the theory of quantum chromodynamics for the determination of a new set of proton parton distribution functions using diverse measurements in pp collisions at , 8 and 13 TeV, performed by the ATLAS experiment at the Large Hadron Collider, together with deep inelastic scattering data from ep collisions at the HERA collider. The ATLAS data sets considered are differential cross-section measurements of inclusive and boson production, and Z boson production in association with jets, production, inclusive jet production and direct photon production. In the analysis, particular attention is paid to the correlation of systematic uncertainties within and between the various ATLAS data sets and to the impact of model, theoretical and parameterisation uncertainties. The resulting set of parton distribution functions is called ATLASpdf21.
Performance of the ATLAS Level-1 topological trigger in Run 2
Authors
Georges Aad,Brad Abbott,Dale Charles Abbott,A Abed Abud,Kira Abeling,Deshan Kavishka Abhayasinghe,Syed Haider Abidi,OS AbouZeid,NL Abraham,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,AC Abusleme Hoffman,Bobby Samir Acharya,Baida Achkar,Lennart Adam,C Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,Jahred Adelman,Aytul Adiguzel,Sofia Adorni,Tim Adye,AA Affolder,Yoav Afik,Christina Agapopoulou,Merve Nazlim Agaras,Anamika Aggarwal,Catalin Agheorghiesei,JA Aguilar-Saavedra,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Xiaocong Ai,Giulio Aielli,Shunichi Akatsuka,Melike Akbiyik,TPA Åkesson,Ece Akilli,AV Akimov,K Al Khoury,Gian Luigi Alberghi,Justin Albert,MJ Alconada Verzini,S 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,PP Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,Alessandro Ambler,Luca Ambroz,Christoph Amelung,D Amidei,SP Amor Dos Santos,Simone Amoroso,Cherifa Sabrina Amrouche,Christos Anastopoulos,Nansi Andari,Timothy Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,V Andrei,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,Nordin Aranzabal,V Araujo Ferraz,Chiara Arcangeletti,ATH Arce,J-F Arguin,Spyridon Argyropoulos,J-H Arling,Aaron James Armbruster,Alexander Armstrong,Olivier Arnaez,Hannah Arnold,ZP Arrubarrena Tame,Giacomo Artoni,Sebastian Artz,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Asbah,Eleni Myrto Asimakopoulou,Lily Asquith,Jihad Assahsah,Ketevi Assamagan,Robert Astalos,Ryan Justin Atkin,Markus Atkinson,Naim Bora Atlay,Hicham Atmani,Prachi Arvind Atmasiddha,Kamil Augsten,Volker Andreas Austrup,Giuseppe Avolio,Mohamad Kassem Ayoub,Georges Azuelos,Dominik Babal,Henri Bachacou,K Bachas,Filip Backman,Paolo Bagnaia,Marzieh Bahmani,H Bahrasemani,AJ Bailey,Virginia Ruth Bailey,JT Baines,Christos Bakalis,OK Baker,Pepijn Johannes Bakker,Evelin Bakos,D Bakshi Gupta,Shyam Balaji,Rahul Balasubramanian,EM Baldin,Petr Balek,Fabrice Balli,William Keaton Balunas,Johannes Balz,Elzbieta Banas
Journal
The European Physical Journal C
Published Date
2022/1
During LHC Run 2 (2015–2018) the ATLAS Level-1 topological trigger allowed efficient data-taking by the ATLAS experiment at luminosities up to 2.110 cms, which exceeds the design value by a factor of two. The system was installed in 2016 and operated in 2017 and 2018. It uses Field Programmable Gate Array processors to select interesting events by placing kinematic and angular requirements on electromagnetic clusters, jets, -leptons, muons and the missing transverse energy. It allowed to significantly improve the background event rejection and signal event acceptance, in particular for Higgs and B-physics processes.
Measurement of the c-jet mistagging efficiency in events using pp collision data at collected with the ATLAS detector
Authors
Georges Aad,B Abbott,DC Abbott,A 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,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 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,J-F 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
The European Physical Journal C
Published Date
2022/1
A technique is presented to measure the efficiency with which c-jets are mistagged as b-jets (mistagging efficiency) using events, where one of the W bosons decays into an electron or muon and a neutrino and the other decays into a quark–antiquark pair. The measurement utilises the relatively large and known branching ratio, which allows a measurement to be made in an inclusive c-jet sample. The data sample used was collected by the ATLAS detector at and corresponds to an integrated luminosity of 139 fb. Events are reconstructed using a kinematic likelihood technique which selects the mapping between jets and decay products that yields the highest likelihood value. The distribution of the b-tagging discriminant for jets from the hadronic W decays in data is compared with that in simulation to extract the mistagging efficiency as a function of jet transverse momentum. The total …
Search for new phenomena in three-or four-lepton events in pp collisions at s= 13 TeV with the ATLAS detector
Authors
Georges Aad,Brad Abbott,Dale C Abbott,A Abed Abud,Kira Abeling,Deshan Kavishka Abhayasinghe,Syed Haider Abidi,OS AbouZeid,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,AC Abusleme Hoffman,Bobby Samir Acharya,Baida Achkar,Lennart Adam,C Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,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,Shunichi Akatsuka,Melike Akbiyik,TPA Åkesson,AV Akimov,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,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,Cherifa Sabrina Amrouche,Christos Anastopoulos,Nansi Andari,T Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Victor Andrei,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,J-H 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,Giuseppe Avolio,Mohamad Kassem Ayoub,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos 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
Journal
Physics Letters B
Published Date
2022/1/10
A search with minimal model dependence for physics beyond the Standard Model in events featuring three or four charged leptons (3ℓ and 4ℓ, ℓ= e, μ) is presented. The analysis aims to be sensitive to a wide range of potential new-physics theories simultaneously. This analysis uses data from pp collisions delivered by the Large Hadron Collider at a centre-of-mass energy of s= 13 TeV and recorded with the ATLAS detector, corresponding to the full Run 2 dataset of 139 fb− 1. The 3ℓ and 4ℓ phase space is divided into 22 event categories according to the number of leptons in the event, the missing transverse momentum, the invariant mass of the leptons, and the presence of leptons originating from a Z-boson candidate. These event categories are analysed independently for the presence of deviations from the Standard Model. No statistically significant deviations from the Standard Model predictions are observed …
Search for Higgs bosons decaying into new spin-0 or spin-1 particles in four-lepton final states with the ATLAS detector with 139 fb−1 of pp collision data at = 13 …
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,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
2022/3
Searches are conducted for new spin-0 or spin-1 bosons using events where a Higgs boson with mass 125 GeV decays into four leptons (ℓ= e, μ). This decay is presumed to occur via an intermediate state which contains two on-shell, promptly decaying bosons: H→ XX/ZX→ 4ℓ, where the new boson X has a mass between 1 and 60 GeV. The search uses pp collision data collected with the ATLAS detector at the LHC with an integrated luminosity of 139 fb− 1 at a centre-of-mass energy= 13 TeV. The data are found to be consistent with Standard Model expectations. Limits are set on fiducial cross sections and on the branching ratio of the Higgs boson to decay into XX/ZX, improving those from previous publications by a factor between two and four. Limits are also set on mixing parameters relevant in extensions of the Standard Model containing a dark sector where X is interpreted to be a dark boson.
Direct constraint on the Higgs–charm coupling from a search for Higgs boson decays into charm quarks with the ATLAS detector
Authors
Georges Aad,Brad Abbott,Dale C Abbott,A Abed Abud,Kira Abeling,Deshan Kavishka Abhayasinghe,Syed Haider 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,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,Melike Akbiyik,TPA Åkesson,AV Akimov,K 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,Christian Appelt,N Aranzabal,V Araujo Ferraz,Chiara Arcangeletti,ATH Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,J-H Arling,Aaron James Armbruster,Olivier Arnaez,Hannah Arnold,ZP Arrubarrena Tame,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Eleni Myrto Asimakopoulou,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,Marzieh Bahmani,AJ Bailey,VR Bailey,JT Baines,Christos Bakalis,OK Baker,Pepijn Johannes Bakker,Evelin Bakos,D Bakshi Gupta,Shyam Balaji,Rahul Balasubramanian,EM Baldin,Petr Balek,Eric Ballabene
Journal
The European Physical Journal C
Published Date
2022/8/18
A search for the Higgs boson decaying into a pair of charm quarks is presented. The analysis uses proton–proton collisions to target the production of a Higgs boson in association with a leptonically decaying W or Z boson. The dataset delivered by the LHC at a centre-of-mass energy of and recorded by the ATLAS detector corresponds to an integrated luminosity of 139 fb-1. Flavour-tagging algorithms are used to identify jets originating from the hadronisation of charm quarks. The analysis method is validated with the simultaneous measurement of WW, WZ and ZZ production, with observed (expected) significances of 2.6 (2.2) standard deviations above the background-only prediction for the (W/Z) Z (→ cc¯) process and 3.8 (4.6) standard deviations for the (W/Z) W (→ cq) process. The (W/Z) H (→ cc¯) search yields an observed (expected) upper limit of 26 (31) times the predicted Standard Model cross-section times …
Search for resonant pair production of Higgs bosons in the final state using collisions at with the ATLAS detector
Authors
Georges Aad,B Abbott,D Abbott,A Abed Abud,K Abeling,D Abhayasinghe,S Abidi,H Abramowicz,H Abreu,Y Abulaiti,A Abusleme Hoffman,B Acharya,B Achkar,L Adam,C Adam Bourdarios,L Adamczyk,L Adamek,S Addepalli,J Adelman,A Adiguzel,S Adorni,T Adye,A Affolder,Y Afik,C Agapopoulou,M Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,J Aguilar-Saavedra,A Ahmad,F Ahmadov,W Ahmed,X Ai,G Aielli,I Aizenberg,S Akatsuka,M Akbiyik,A Akimov,K Al Khoury,G Alberghi,J Albert,P Albicocco,M Alconada Verzini,S Alderweireldt,M Aleksa,I Aleksandrov,C Alexa,T Alexopoulos,A Alfonsi,F Alfonsi,M Alhroob,B Ali,S Ali,M Aliev,G Alimonti,C Allaire,B Allbrooke,P Allport,A Aloisio,F Alonso,C Alpigiani,E Alunno Camelia,M Alvarez Estevez,M Alviggi,Y Amaral Coutinho,A Ambler,L Ambroz,C Amelung,D Amidei,S Amor Dos Santos,S Amoroso,C Amrouche,C Anastopoulos,N Andari,T Andeen,J Anders,S Andrean,A Andreazza,S Angelidakis,A Angerami,A Anisenkov,A Annovi,C Antel,M Anthony,E Antipov,M Antonelli,D Antrim,F Anulli,M Aoki,J Aparisi Pozo,M Aparo,L Aperio Bella,N Aranzabal,V Araujo Ferraz,C Arcangeletti,A Arce,E Arena,JF Arguin,S Argyropoulos,J-H Arling,A Armbruster,A Armstrong,O Arnaez,H Arnold,Z Arrubarrena Tame,G Artoni,H Asada,K Asai,S Asai,N Asbah,E Asimakopoulou,L Asquith,J Assahsah,K Assamagan,R Astalos,R Atkin,M Atkinson,N Atlay,H Atmani,P Atmasiddha,K Augsten,S Auricchio,V Austrup,G Avner,G Avolio,M Ayoub,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,P Bagnaia,H Bahrasemani,A Bailey,V Bailey,J Baines,C Bakalis,O Baker,P Bakker,E Bakos,D Bakshi Gupta,S Balaji,R Balasubramanian,E Baldin,P Balek,E Ballabene,F Balli
Journal
PHYSICAL REVIEW D
Published Date
2022
A search for resonant Higgs boson pair production in the b (b) over barb (b) over bar final state is presented. The analysis uses 126 fb (-1)-139 fb (-1) of pp collision data at root s= 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The analysis is divided into two channels, targeting Higgs boson decays which are reconstructed as pairs of small-radius jets or as individual large-radius jets. Spin-0 and spin2 benchmark signal models are considered, both of which correspond to resonant HH production via gluon-gluon fusion. The data are consistent with Standard Model predictions. Upper limits are set on the production cross section times branching ratio to Higgs boson pairs of a new resonance in the mass range from 251 GeV to 5 TeV.
Saul Youssef FAQs
What is Saul Youssef's h-index at Boston University?
The h-index of Saul Youssef has been 136 since 2020 and 193 in total.
What are Saul Youssef's top articles?
The articles with the titles of
The impact of anticoagulant medications on fragility femur fracture care: The hip and femoral fracture anticoagulation surgical timing evaluation (HASTE) study
Lack of regional pathways impact on surgical delay: Analysis of the Orthopaedic Trauma Hospital Outcomes–Patient Operative Delays (ORTHOPOD) study
ORthopaedic trauma hospital outcomes-Patient operative delays (ORTHOPOD) Study: The management of day-case orthopaedic trauma in the United Kingdom
Pure Data Foundation of Mathematics and Computing
Care of patients with ST-elevation myocardial infarction: an international analysis of quality indicators in the acute coronary syndrome STEMI Registry of the EURObservational …
Search for type-III seesaw heavy leptons in leptonic final states in pp collisions at√ s= 13 TeV with the ATLAS detector
SARS-CoV-2 infection and venous thromboembolism after surgery: an international prospective cohort study.
Luminosity determination in collisions at TeV using the ATLAS detector at the LHC
...
are the top articles of Saul Youssef at Boston University.
What are Saul Youssef's research interests?
The research interests of Saul Youssef are: Physics, Mathematics, Computing
What is Saul Youssef's total number of citations?
Saul Youssef has 263,679 citations in total.
Useful Links