Measurement of Angular Correlations Between Beauty Jets Produced in pp Collisions at 7 TeV

Collaboration
Apr 18, 2013
18 pages
  • Published: Apr 18, 2013
Report number:
  • CMS-PAS-BPH-10-019
Experiments:

Citations per year

20112012201303
Abstract:
A measurement of the angular correlations between beauty jets produced 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, dσdΔϕ\frac{d\sigma}{d\Delta\phi} and dσdΔR\frac{d\sigma}{d\Delta R}, are obtained from a sample whose integrated luminosity corresponds to 3pb13\,\mathrm{pb}^{-1}. The visible kinematic phase-space is defined by the requirement of two b-tagged jets with pT>30p_{T} > 30 GeV and η<2.4\left|\eta\right| < 2.4, with an angular separation of ΔR>0.6\Delta R > 0.6 between them, one of the jets has a muon within its decay products with pT>8p_{T} > 8 GeV and η<2.1\left|\eta\right| < 2.1. The results obtained in data are compared with predictions based on perturbative QCD calculations.
Note:
  • CMS Physics Analysis Summary - preliminary results
  • kinematics: phase space
  • impact parameter: high
  • quantum chromodynamics: perturbation theory
  • p p: scattering
  • bottom: pair production
  • dijet: angular correlation
  • CERN LHC Coll
  • muon: trigger
  • CMS
  • experimental results