CMS-PAS-BPH-10-019

CMS-PAS-BPH-10-019
Measurement of Angular Correlations Between Beauty Jets Produced in pp Collisions at 7 TeV
CMS Collaboration
2013

Abstract: A measurement of the angular correlations between beauty jetsproduced in pp collisions at a center-of-mass energy of 7 TeV at LHC is presented. A heavy-flavor enriched event sample is selected by a low-transverse-momentum single-muon trigger. Hadronic jets are identified as beauty jets by the presence of nearby high impact parameter tracks. The measured differential di-beauty jet production cross sections, $\frac{d\sigma}{d\Delta\phi}$ and $\frac{d\sigma}{d\Delta R}$ , are obtained from a sample whose integrated luminosity corresponds to \,\mathrm{pb}^{-1} $. The visible kinematic phase-space is defined by the requirement of two b-tagged jets with$ p_{T} > 30 $GeV and$ \left\|\eta\right\| < 2.4 $, with an angular separation of$ \Delta R > 0.6 $between them, one of the jets has a muon within its decay products with$ p_{T} > 8 $GeV and$ \left\|\eta\right\| < 2.1$. The results obtained in data are compared with predictions based on perturbative QCD calculations.
Links: CDS record (PDF) ; inSPIRE record ; Public twiki page ; CADI line (restricted) ;

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