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Measurement of the cross-section for b-jets produced in association with a Z boson at root s=7 TeV with the ATLAS detector ATLAS Collaboration

Journal Article · · Physics Letters. B
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A measurement is presented of the inclusive cross-section for b-jet production in association with a Z boson in pp collisions at a centre-of-mass energy of {radical}s = 7 TeV. The analysis uses the data sample collected by the ATLAS experiment in 2010, corresponding to an integrated luminosity of approximately 36 pb{sup -1}. The event selection requires a Z boson decaying into high pT electrons or muons, and at least one b-jet, identified by its displaced vertex, with transverse momentum pT > 25 GeV and rapidity |y| < 2.1. After subtraction of background processes, the yield is extracted from the vertex mass distribution of the candidate b-jets. The ratio of this cross-section to the inclusive Z cross-section (the average number of b-jets per Z event) is also measured. Both results are found to be in good agreement with perturbative QCD predictions at next-to-leading order.
Research Organization:
BROOKHAVEN NATIONAL LABORATORY (BNL)
Sponsoring Organization:
USDOE SC OFFICE OF SCIENCE (SC)
DOE Contract Number:
AC02-98CH10886
OSTI ID:
1041171
Report Number(s):
BNL--97236-2012-JA; KA1101021
Journal Information:
Physics Letters. B, Journal Name: Physics Letters. B Journal Issue: 4-5 Vol. 706; ISSN PYLBAJ; ISSN 0370-2693
Country of Publication:
United States
Language:
English

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Cited By (7)

Electroweak gauge-boson production in association with b jets at Hadron Colliders journal June 2015
Electroweak Gauge-Boson Production in Association with b Jets at Hadron Colliders text January 2015
Z ′ near the Z -pole journal April 2012
Observation and measurements of the production of prompt and non-prompt $$\varvec{\text {J}\uppsi }$$ J ψ mesons in association with a $$\varvec{Z}$$ Z boson in $$\varvec{pp}$$ p p collisions at $$\varvec{\sqrt{s}= 8\,\text {TeV}}$$ s = 8 TeV with the ATLAS detector journal May 2015
Measurements of b-jet tagging efficiency with the ATLAS detector using t t ¯ $$ t\overline{t} $$ events at s = 13 $$ \sqrt{s}=13 $$ TeV journal August 2018
Measurement of the ratio of differential cross sections σ ( p p ¯ → Z + b   jet ) / σ ( p p ¯ → Z + jet ) in p p ¯ collisions at s = 1.96     TeV journal May 2013
Measurement of the production cross section of a W boson in association with two b jets in pp collisions at $$\sqrt{s} = 8{\,\mathrm{{TeV}}} $$ s = 8 TeV journal February 2017

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