TY - JOUR
T1 - Measurements of the production cross-section for a Z boson in association with b-jets in proton-proton collisions at √s = 13 TeV with the ATLAS detector
AU - ATLAS Collaboration
AU - Aad, G
AU - Åkesson, Torsten
AU - Bocchetta, Simona
AU - Bryngemark, Lene
AU - Corrigan, Eric Edward
AU - Doglioni, Caterina
AU - Geisen, Jannik
AU - Gregersen, Kristian
AU - Brottmann Hansen, Eva
AU - Hedberg, Vincent
AU - Jarlskog, Göran
AU - Kellermann, Edgar
AU - Konya, Balazs
AU - Lytken, Else
AU - Mankinen, Katja
AU - Marcon, Caterina
AU - Mjörnmark, Ulf
AU - Mullier, Geoffrey André Adrien
AU - Pöttgen, Ruth
AU - Poulsen, Trine
AU - Skorda, Eleni
AU - Smirnova, Oxana
AU - Zwalinski, L
PY - 2020
Y1 - 2020
N2 - 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 = 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 pT> 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. [Figure not available: see fulltext.] © 2020, The Author(s).
AB - 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 = 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 pT> 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. [Figure not available: see fulltext.] © 2020, The Author(s).
KW - Hadron-Hadron scattering (experiments)
U2 - 10.1007/JHEP07(2020)044
DO - 10.1007/JHEP07(2020)044
M3 - Article
SN - 1029-8479
VL - 2020
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 7
M1 - 44
ER -