Artigo
Inclusive b-jet production in pp collisions at root s=7 TeV
Fecha
2012-04-01Registro en:
Journal of High Energy Physics. New York: Springer, n. 4, p. 36, 2012.
1126-6708
10.1007/JHEP04(2012)084
WOS:000304148100010
WOS000304148100010.pdf
Autor
Yerevan Phys Inst
Inst Hochenergiephys OeAW
Natl Ctr Particle & High Energy Phys
Univ Antwerp
Vrije Univ Brussel
Univ Libre Brussels
Univ Ghent
Catholic Univ Louvain
Univ Mons
Centro Brasileiro de Pesquisas Físicas (CBPF)
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Estadual Paulista (Unesp)
Bulgarian Acad Sci
Univ Sofia
Inst High Energy Phys
Peking Univ
Universidad de los Andes
Tech Univ Split
Univ Split
Rudjer Boskovic Inst
Univ Cyprus
Charles Univ Prague
Egyptian Network High Energy Phys
NICPB
Univ Helsinki
Helsinki Inst Phys
Lappeenranta Univ Technol
IN2P3 CNRS
CEA Saclay
Univ Haute Alsace Mulhouse
IN2P3
Univ Lyon 1
Tbilisi State Univ
RWTH Aachen University
DESY
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Univ Karlsruhe
Inst Nucl Phys Demokritos
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KFKI Res Inst Particle & Nucl Phys
Inst Nucl Res ATOMKI
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Bhabha Atom Res Ctr
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Tata Inst Fundamental Res HECR
Inst Res Fundamental Sci IPM
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INFN Sez Catania
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Resumen
The inclusive b-jet production cross section in pp collisions at a center-of-mass energy of 7TeV is measured using data collected by the CMS experiment at the LHC. The cross section is presented as a function of the jet transverse momentum in the range 18 < p(T) < 200 GeV for several rapidity intervals. The results are also given as the ratio of the b-jet production cross section to the inclusive jet production cross section. The measurement is performed with two different analyses, which differ in their trigger selection and b-jet identification: a jet analysis that selects events with a b jet using a sample corresponding to an integrated luminosity of 34 pb(-1), and a muon analysis requiring a b jet with a muon based on an integrated luminosity of 3 pb(-1). In both approaches the b jets are identified by requiring a secondary vertex. The results from the two methods are in agreement with each other and with next-to-leading order calculations, as well as with predictions based on the PYTHIA event generator.