Journal article
J/ψ and ψ(2S) production in pp collisions at √s = 7 Tev
The journal of high energy physics, Vol.2012(2), 11
02/01/2012
DOI: 10.1007/JHEP02(2012)011
Abstract
A measurement of the J/ ψ and ψ (2S) production cross sections in pp collisions at √s = 7TeV with the CMS experiment at the LHC is presented. The data sample corresponds to an integrated luminosity of 37 pb -1. Using a fit to the invariant mass and decay length distributions, production cross sections have been measured separately for prompt and non-prompt charmonium states, as a function of the meson transverse momentum in several rapidity ranges and integrated in the kinematical regions considered in this study. In addition, cross sections restricted to the acceptance of the CMS detector are given, which are not affected by the polarization of the charmonium states. The ratio of the differential production cross sections of the two states, where systematic uncertainties largely cancel, is also determined. The branching fraction of the inclusive B → ψ (2S)X decay is extracted from the ratio of the non-prompt cross sections to be: B(B → ψ(2S)X) = (3.08 ± 0.12 (stat.+syst.) ± 0.13 (theor.) ± 0.42 (BPDG)) × 10−3
Details
- Title: Subtitle
- J/ψ and ψ(2S) production in pp collisions at √s = 7 Tev
- Creators
- CMS Collaboration
- Contributors
- A Penzo (Contributor) - University of Iowa, Physics and AstronomyE. A Albayrak (Contributor) - University of Iowa, Physics and AstronomyE McCliment (Contributor) - University of Iowa, Physics and AstronomyJ Nachtman (Contributor) - University of Iowa, Physics and AstronomyC. R Newsom (Contributor) - University of Iowa, Physics and AstronomyY Onel (Contributor) - University of Iowa, Physics and AstronomyK Yi (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- The journal of high energy physics, Vol.2012(2), 11
- Publisher
- Springer Berlin Heidelberg
- DOI
- 10.1007/JHEP02(2012)011
- ISSN
- 1126-6708
- eISSN
- 1126-6708
- Language
- English
- Date published
- 02/01/2012
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199853402771
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