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  • “School of Particles”

     
    Paper   IPM / Particles / 12383
       School of Particles and Accelerator
      Title: Measurement of the cross section for production of b b-bar X, decaying to muons in pp collisions at sqrt(s)=7 TeV
      Author(s):
    1 . Hessamadin Arfaei
    2 . Hamed Bakhshiansohi
    3 . Seyed Mohsen Etesami
    4 . Ali Fahim
    5 . Majid Hashemi
    6 . Hoda Hesari
    7 . Abideh Jafari
    8 . Mohsen Khakzad
    9 . A Mohammadi
    10 . Mojtaba Mohammadi Najafabadi
    11 . Saeid Paktinat
    12 . Batool Safarzadeh
    13 . Maryam Zeinali
      Status: Published
      Journal: JHEP
      No.: 110
      Vol.: 1206
      Year: 2012
      Supported by: IPM
      Abstract:
    A measurement of the inclusive cross section for the process pp to b b-bar X to muon muon X' at sqrt(s) = 7 TeV is presented, based on a data sample corresponding to an integrated luminosity of 27.9 inverse picobarns collected by the CMS experiment at the LHC. By selecting pairs of muons each with pseudorapidity abs(eta)<2.1, the value of the cross section for pp to b b-bar X to muon muon X' is found to be 25.7 +/- 0.1 (stat.) +/- 2.2 (syst.) +/- 1.0 (lumi.) nb is obtained for muons with transverse momentum greater than 4 GeV, and 5.03 +/- 0.05 (stat.) +/- 0.46 (syst.) +/- 0.20 (lumi.) nb for transverse momenta greater than 6 GeV. These results are compared to QCD predictions at leading and next-to-leading orders

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