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    Measurement of the Z/γ*  + b-jet cross section in pp collisions at √s=7 TeV

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    Author
    CMS Collaboration; Adair, A.; Boulahouache, C.; Cuplov, V.; Ecklund, K.M.; More... Geurts, F.J.M.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. Less...
    Date
    2012
    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 7 TeV 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 ℓℓ = ee or μμ) for events with the invariant mass 60 < M ℓℓ  < 120 GeV, at least one b jet at the hadron level with p T > 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.)+0.25−0.55 (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.
    Citation
    CMS Collaboration, Adair, A., Boulahouache, C., et al.. "Measurement of the Z/γ*  + b-jet cross section in pp collisions at √s=7 TeV." Journal of High Energy Physics, 2012, no. 126 (2012) Springer: http://dx.doi.org/10.1007/JHEP06(2012)126.
    Published Version
    http://dx.doi.org/10.1007/JHEP06(2012)126
    Keyword
    Hadron-Hadron Scattering
    Type
    Journal article
    Publisher
    Springer
    Citable link to this page
    https://hdl.handle.net/1911/81004
    Rights
    JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0
    Link to License
    https://creativecommons.org/licenses/by/4.0/
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    • Faculty Publications [5245]
    • Physics and Astronomy Publications [1836]

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    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
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