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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:

Submitted

Journal:

JHEP

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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