Measurement of the Z/γ* + b-jet cross section in pp collisions at √s = 7 TeV
Name
10.1007%2FJHEP06(2012)126.pdf
Size
754.75 KB
Format
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Checksum (MD5)
4b78b4976b57535524706b23a6ef88ef
Author(s)
CMS Collaboration
Alver, Burak Han
Bauer, Gerry P
Bendavid, Joshua L.
Busza, Wit
Butz, Erik M.
Cali, Ivan Amos
Dutta, Valentina
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Date Issued
June 2012
Journal
Journal of High Energy Physics
Publisher
Springer Nature
Citation
Chatrchyan, S. et al. “Measurement of the Z/γ* + b-jet cross section in pp collisions at √s = 7 TeV.” Journal of High Energy Physics 2012, 6 (June 2012): 126 © 2012 SISSA
Version
Final published version
Abstract
The production of b jets in association with a Z/γ*boson is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7TeV and recorded by the CMS detector. The inclusive cross section for Z/γ*+b-jet production is measured in a sample corresponding to an integrated luminosity of 2.2 fb -1 . The Z/γ*+b-jet cross section with Z/γ*→ℓℓ (where ℓ ℓ = ee or μ μ) for events with the invariant mass 60 < M ℓ ℓ < 120 GeV, at least one b jet at the hadron level with pT > 25 GeV and |η| < 2:1, and a separation between the leptons and the jets of ΔR > 0:5 is found to be 5:84±0:08 (stat:) ±0:72 (syst:) -0:55 +0:25 (theory) pb. The kinematic properties of the events are also studied and found to be in agreement with the predictions made by the MadGraph event generator with the parton shower and the hadronisation performed by pythia.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Attribution 4.0 International (CC BY 4.0)
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP06(2012)126
