Inclusive b-jet production in pp collisions at $\sqrt {s} = 7TeV$

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König,I Vodopiyanov,M Kossov,M Xu,V J Smith,N Almeida,S Goadhouse,F J M Geurts,E Di Marco,T Yetkin,A Bornheim,R Gonzalez Suarez,F M Stober,R Houtz,M Bergholz,M Pieri,S Malhotra,M Malek,A Flossdorf,O Kodolova,H El Mamouni,C Farrell,S Nuzzo,L Uplegger,A Graziano,J St John,J Luetic,M Park,N Mohr,D Menasce,V Patras,O Grachov,F Raupach,W A Khan,P E Marage,P Baesso,H Topakli,J Letts,L Demortier,M Schmitt,D Ungaro,J Slaunwhite,D Fehling,M A Reyes-Santos,M Chen,A York,M De Palma,A Bean,U Gebbert,C Bernet,A Saha,K S Grogg,H W K Cheung,S Frosali,M Swartz,S Stoykova,N Neumeister,F Primavera,A Ruiz-Jimeno,G N Kim,S M Silva Do Amaral,F Lacroix,H Arfaei,D Uzun,L Lloret Iglesias,A Baden,W Erdmann,G Petrucciani,L Moroni,I V Akin,D M Newbold,R Stone,R Trayanov,S P Singh,S Paktinat Mehdiabadi,F Nowak,J Goodell,R K Choudhury,A Dermenev,M M Baarmand,K Sogut,P Eerola,A Meyer,M Anderson,A Léonard,I Vila,S Ganguly,M W Arenton,S Obraztsov,M Edelhoff,M Djordjevic,M Eads,A Drozdetskiy,R Vilar Cortabitarte,B 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doi:10.1007/jhep04(2012)084

Abstract

Abstract The inclusive b-jet production cross section in pp collisions at a center-of mass energy of 7 TeV 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 abjetwithamuonbasedonanintegratedluminosityof3pb−1. Inbothapproachestheb 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.

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