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

被引：0
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作者：
G. Aad
B. Abbott
J. Abdallah
S. Abdel Khalek
O. Abdinov
R. Aben
B. Abi
M. Abolins
O. S. AbouZeid
H. Abramowicz
H. Abreu
R. Abreu
Y. Abulaiti
B. S. Acharya
L. Adamczyk
D. L. Adams
J. Adelman
S. Adomeit
T. Adye
T. Agatonovic-Jovin
J. A. Aguilar-Saavedra
M. Agustoni
S. P. Ahlen
F. Ahmadov
G. Aielli
H. Akerstedt
T. P. A. Åkesson
G. Akimoto
A. V. Akimov
G. L. Alberghi
J. Albert
S. Albrand
M. J. Alconada Verzini
M. Aleksa
I. N. Aleksandrov
C. Alexa
G. Alexander
G. Alexandre
T. Alexopoulos
M. Alhroob
G. Alimonti
L. Alio
J. Alison
B. M. M. Allbrooke
L. J. Allison
P. P. Allport
J. Almond
A. Aloisio
A. Alonso
F. Alonso
机构：
[1] University of Adelaide,Department of Physics
[2] SUNY Albany,Physics Department
[3] University of Alberta,Department of Physics
[4] Ankara University,Department of Physics
[5] Gazi University,Department of Physics
[6] TOBB University of Economics and Technology,Division of Physics
[7] Turkish Atomic Energy Authority,High Energy Physics Division
[8] LAPP,Department of Physics
[9] CNRS/IN2P3 and Université de Savoie,Department of Physics
[10] Argonne National Laboratory,Physics Department
[11] University of Arizona,Physics Department
[12] The University of Texas at Arlington,Institute of Physics
[13] University of Athens,Institute of Physics
[14] National Technical University of Athens,Vinca Institute of Nuclear Sciences
[15] Azerbaijan Academy of Sciences,Department for Physics and Technology
[16] Institut de Física d’Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona,Physics Division
[17] University of Belgrade,Department of Physics
[18] University of Belgrade,Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics
[19] University of Bergen,School of Physics and Astronomy
[20] Lawrence Berkeley National Laboratory and University of California,Department of Physics
[21] Humboldt University,Department of Physics
[22] University of Bern,Department of Physics Engineering
[23] University of Birmingham,Dipartimento di Fisica e Astronomia
[24] Bogazici University,Physikalisches Institut
[25] Dogus University,Department of Physics
[26] Gaziantep University,Department of Physics
[27] INFN Sezione di Bologna,Instituto de Fisica
[28] Università di Bologna,Physics Department
[29] University of Bonn,Departamento de Física
[30] Boston University,Cavendish Laboratory
[31] Brandeis University,Department of Physics
[32] Universidade Federal do Rio De Janeiro COPPE/EE/IF,Enrico Fermi Institute
[33] Federal University of Juiz de Fora (UFJF),Departamento de Física
[34] Federal University of Sao Joao del Rei (UFSJ),Departamento de Física
[35] Universidade de Sao Paulo,Institute of High Energy Physics
[36] Brookhaven National Laboratory,Department of Modern Physics
[37] National Institute of Physics and Nuclear Engineering,Department of Physics
[38] National Institute for Research and Development of Isotopic and Molecular Technologies,School of Physics
[39] Physics Department,Physics Department
[40] Universidad de Buenos Aires,Nevis Laboratory
[41] University of Cambridge,Niels Bohr Institute
[42] Carleton University,Dipartimento di Fisica
[43] CERN,Marian Smoluchowski Institute of Physics
[44] University of Chicago,The Henryk Niewodniczanski Institute of Nuclear Physics
[45] Pontificia Universidad Católica de Chile,Physics Department
[46] Universidad Técnica Federico Santa María,Physics Department
[47] Chinese Academy of Sciences,Institut für Experimentelle Physik IV
[48] University of Science and Technology of China,Department of Physics
[49] Nanjing University,SUPA
[50] Shandong University, School of Physics and Astronomy
来源：
Journal of High Energy Physics | / 2014卷
关键词：
Electroweak interaction; Hadron-Hadron Scattering; QCD; Heavy quark production;
D O I：
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学科分类号：
摘要：
Measurements of differential production cross-sections of a Z boson in association with b-jets in pp collisions at s=7\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \sqrt{s}=7 $$\end{document} 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. [graphic not available: see fulltext]
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