Measurements of differential production cross-sections of a Z boson in association with b -jets in pp collisions at √s = 7 TeV are reported. The data analysed correspond to an integrated luminosity of 4.6 fb −1 recorded with the ATLAS detector at the Large Hadron Collider. Particle-level cross-sections are determined for events with a Z boson decaying into an electron or muon pair, and containing b -jets. For events with at least one b -jet, the cross-section is presented as a function of the Z boson transverse momentum and rapidity, together with the inclusive b -jet cross-section as a function of b -jet transverse momentum, rapidity and angular separations between the b -jet and the Z boson. For events with at least two b -jets, the cross-section is determined as a function of the invariant mass and angular separation of the two highest transverse momentum b -jets, and as a function of the Z boson transverse momentum and rapidity. Results are compared to leading-order and next-to-leading-order perturbative QCD calculations.

Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., et al. (2014). Measurement of differential production cross-sections for a Z boson in association with b-jets in 7 TeV proton-proton collisions with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 10(10), 1-48 [10.1007/JHEP10(2014)141].

Measurement of differential production cross-sections for a Z boson in association with b-jets in 7 TeV proton-proton collisions with the ATLAS detector

V. Bortolotto;F. Ceradini;B. Di Micco;R. Di Nardo;D. Orestano;F. Petrucci;D. Puddu;G. Salamanna;C. Taccini;M. Trovatelli;
2014-01-01

Abstract

Measurements of differential production cross-sections of a Z boson in association with b -jets in pp collisions at √s = 7 TeV are reported. The data analysed correspond to an integrated luminosity of 4.6 fb −1 recorded with the ATLAS detector at the Large Hadron Collider. Particle-level cross-sections are determined for events with a Z boson decaying into an electron or muon pair, and containing b -jets. For events with at least one b -jet, the cross-section is presented as a function of the Z boson transverse momentum and rapidity, together with the inclusive b -jet cross-section as a function of b -jet transverse momentum, rapidity and angular separations between the b -jet and the Z boson. For events with at least two b -jets, the cross-section is determined as a function of the invariant mass and angular separation of the two highest transverse momentum b -jets, and as a function of the Z boson transverse momentum and rapidity. Results are compared to leading-order and next-to-leading-order perturbative QCD calculations.
2014
Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., et al. (2014). Measurement of differential production cross-sections for a Z boson in association with b-jets in 7 TeV proton-proton collisions with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 10(10), 1-48 [10.1007/JHEP10(2014)141].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/118850
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