|
Title
|
|
|
|
Prompt and non-prompt production in pp collisions at = 7 TeV
| |
|
Author
|
|
|
|
| |
|
Institution/Organisation
|
|
|
|
CMS Collaboration
| |
|
Abstract
|
|
|
|
| The production of J/ψ mesons is studied in pp collisions at s=7 TeV with the CMS experiment at the LHC. The measurement is based on a dimuon sample corresponding to an integrated luminosity of 314 nb−1. The J/ψ differential cross section is determined, as a function of the J/ψ transverse momentum, in three rapidity ranges. A fit to the decay length distribution is used to separate the prompt from the non-prompt (b hadron to J/ψ) component. Integrated over J/ψ transverse momentum from 6.5 to 30 GeV/c and over rapidity in the range |y|<2.4, the measured cross sections, times the dimuon decay branching fraction, are 70.9±2.1(stat.)±3.0(syst.)±7.8(luminosity) nb for prompt J/ψ mesons assuming unpolarized production and 26.0±1.4(stat.)±1.6(syst.)±2.9(luminosity) nb for J/ψ mesons from b-hadron decays. |
| |
|
Language
|
|
|
|
English
| |
|
Source (journal)
|
|
|
|
European physical journal : C : particles and fields. - Berlin
| |
|
Publication
|
|
|
|
Berlin
:
2011
| |
|
ISSN
|
|
|
|
1434-6044
1434-6052
| |
|
DOI
|
|
|
|
10.1140/EPJC/S10052-011-1575-8
| |
|
Volume/pages
|
|
|
|
71
:3
(2011)
, p. 1-26
| |
|
Article Reference
|
|
|
|
1575
| |
|
ISI
|
|
|
|
000291698400002
| |
|
Medium
|
|
|
|
E-only publicatie
| |
|
Full text (Publisher's DOI)
|
|
|
|
| |
|
Full text (publisher's version - intranet only)
|
|
|
|
| |
|