6533b7dafe1ef96bd126e7d6

RESEARCH PRODUCT

Measurement of the b-hadron production cross section using decays to D⁎+μ−X final states in pp collisions at √(s)=7 TeV with the ATLAS detector

Atlas CollaborationVasiliki MitsouJuan A. Fuster VerdúAntonio Ferrer SoriaMaría Victoria Castillo GiménezSusana Cabrera UrbánCarmen García GarcíaEmilio Higón RodríguezSalvador Martí GarcíaEduardo Ros MartínezSantiago González De La HozJosé Salt CairolsJuan Antonio Valls FerrerMohammed KaciLuca FioriniYesenia Hernández JiménezCarlos Lacasta LlácerMiguel Villaplana Pérez

subject

Col·lisions (Física nuclear)High Energy Physics::PhenomenologyHigh Energy Physics::ExperimentFísica nuclearNuclear ExperimentPartícules (Física nuclear)Detectors de radiació

description

The b-hadron production cross section is measured with the ATLAS detector in pp collisions at root s = 7 TeV, using 3.3 pb(-1) of integrated luminosity, collected during the 2010 LHC run. The b-hadrons are selected by partially reconstructing D*(+)mu X- final states. Differential cross sections are measured as functions of the transverse momentum and pseudorapidity. The measured production cross section for a b-hadron with p(T) > 9 GeV and vertical bar eta vertical bar < 2.5 is 32.7 +/- 0.8(stat.)(-6.8)(+4.5)(syst.) μb, higher than the next-to-leading-order QCD predictions but consistent within the experimental and theoretical uncertainties.

yearjournalcountryeditionlanguage
2012-01-01
10.1016/j.nuclphysb.2012.07.009http://hdl.handle.net/10550/36964