Measurement of the B0s Production Cross Section with B0s → J/ Decays in pp Collisions at √s = 7 TeV

Authors

S. Chatrchyan, Yerevan Physics Institute, Yerevan, Armenia
Kenneth A. Bloom, University of Nebraska-LincolnFollow
S. Bose, University of Nebraska-LincolnFollow
Jamila Butt, University of Nebraska-Lincoln
Daniel Claes, University of Nebraska-LincolnFollow
Aaron Dominguez, University of Nebraska-LincolnFollow
Michael Eads, University of Nebraska-LincolnFollow
J Keller, University of Nebraska-LincolnFollow
T Kelly
Ilya Kravchenko, University of Nebraska-LincolnFollow
J. Lazo-Flores, University of Nebraska-LincolnFollow
Helena Malbouisson, University of Nebraska-Lincoln
Sudhir Malik, University of Nebraska-LincolnFollow
Gregory Snow, University of Nebraska-LincolnFollow
CMS Collaboration

Date of this Version

2011

Citation

PHYSICAL REVIEW D 84, 052008 (2011); DOI: 10.1103/PhysRevD.84.052008

Comments

Copyright 2011 CERN, for the CMS Collaboration

Abstract

The B⁰_s differential production cross section is measured as functions of the transverse momentum and rapidity in pp collisions at √s= 7 TeV, using the B⁰_s → J/UO decay, and compared with predictions based on perturbative QCD calculations at next-to-leading order. The data sample, collected by the CMS experiment at the LHC, corresponds to an integrated luminosity of 40 pb-1. The B⁰_s is reconstructed from the decays J/U → µ⁺µ^- and O→ K⁺K^- The integrated B0s cross section times B0s→ J/UO branching fraction in the range 8B_T< 50 GeV/c and │y^B < 2.4 is measured to be 6.9 ± 0.6 ± 0.6 nb, where the first uncertainty is statistical and the second is systematic.