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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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