Artigo
Measurement of the cross section for production of b(b)over-barX decaying to muons in pp collisions at root s=7TeV
Fecha
2012-06-01Registro en:
Journal of High Energy Physics. New York: Springer, n. 6, p. 36, 2012.
1029-8479
10.1007/JHEP06(2012)110
WOS:000306418300020
WOS000306418300020.pdf
Autor
Yerevan Phys Inst
Inst Hochenergiephys OeAW
Natl Ctr Particle & High Energy Phys
Univ Antwerp
Vrije Univ Brussel
CERN
NICPB
Universidade Federal do ABC (UFABC)
CALTECH
Ecole Polytech
Suez Canal Univ
Cairo Univ
British Univ
Fayoum Univ
Soltan Inst Nucl Studies
Univ Haute Alsace
Moscow MV Lomonosov State Univ
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Inst Nucl Res ATOMKI
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Tata Inst Fundamental Res HECR
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Institute for Theoretical and Experimental Physics (ITEP)
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Resumen
A measurement of the inclusive cross section for the process pp -> b (b) over barX -> mu mu X' at root s = 7TeV is presented, based on a data sample corresponding to an integrated luminosity of 27.9 pb(-1) collected by the CMS experiment at the LHC. By selecting pairs of muons each with pseudorapidity vertical bar eta vertical bar < 2.1, the value sigma(pp -> b<(b)over bar>X -> mu mu X') = 26.4 +/- 0.1 (stat.) +/- 2.4 (syst.) +/- 1.1 (lumi.) nb is obtained for muons with transverse momentum p(T) > 4 GeV, and 5.12 +/- 0.03 (stat.) +/- 0.48 (syst.) +/- 0.20 (lumi.) nb for p(T) > 6 GeV. These results are compared to QCD predictions at leading and next-to-leading orders.