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Compact Muon Solenoid
LHC, CERN
CMS-SMP-13-004 ; CERN-PH-EP-2014-005
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Measurement of the production cross sections for a Z boson and one or more b jets in pp collisions at √s = 7 TeV
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CMS Collaboration
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7 February 2014
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J. High Energy Phys. 06 (2014) 120
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Abstract:
The production of a Z boson, decaying into two leptons and produced in association with one or more b jets, is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7 TeV. The data were recorded in 2011 with the CMS detector and correspond to an integrated luminosity of 5 inverse-femtobarns. The Z(ll)+b-jets cross sections (where ll = μμ or ee) are measured for a Z boson produced with exactly one or at least two b jets. In addition, a cross section ratio is extracted for a Z boson produced with at least one b jet relative to a Z boson produced with at least one jet. The measured cross sections are compared to various theoretical predictions, and the data favour the predictions in the five-flavour scheme, where b quarks are assumed massless. The kinematic properties of the reconstructed particles are compared with the predictions from the MadGraph event generator using the Pythia parton shower simulation.
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Links:
e-print arXiv:1402.1521 [hep-ex] (PDF) ;
CDS record ;
inSPIRE record ;
Public twiki page ;
HepData record ;
CADI line (restricted) ;
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Compact Muon Solenoid LHC, CERN
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