2020/03/31 by ATLAS Collaboration, G. Aad, B. Abbott +97 · 25 citations
Physics and Astronomy · #ATLAS experiment #Atlas (anatomy) #Boson #Hadron #High-Energy Particle Collisions Research #Large Hadron Collider #Monte Carlo method #Muon #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Parton #Parton shower #Physics #Quantum Chromodynamics and Particle Interactions #Rapidity #hep-ex
paper · pdf · doi:10.1007/jhep07(2020)044
published in Journal of High Energy Physics 2020(7) (Springer Nature) · 57 pages in total, author list starting page 41, 15 figures, 8 tables. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-38/
openalex created_date 2020/04/17 · openalex publication_date 2020/07/01 · arxiv created 2020/08/31 · arxiv updated 2020/09/01 · openalex updated_date 2026/08/06
A bstract This paper presents a measurement of the production cross-section of a Z boson in association with b -jets, in proton-proton collisions at √(s) <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV with the ATLAS experiment at the Large Hadron Collider using data corresponding to an integrated luminosity of 35.6 fb − 1 . Inclusive and differential cross-sections are measured for events containing a Z boson decaying into electrons or muons and produced in association with at least one or at least two b -jets with transverse momentum p T > 20 GeV and rapidity |y| < 2 . 5. Predictions from several Monte Carlo generators based on leading-order (LO) or next-to-leading-order (NLO) matrix elements interfaced with a parton-shower simulation and testing different flavour schemes for the choice of initial-state partons are compared with measured cross-sections. The 5-flavour number scheme predictions at NLO accuracy agree better with data than 4-flavour number scheme ones. The 4-flavour number scheme predictions underestimate data in events with at least one b-jet.