In:
Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2013, No. 4 ( 2013-04)
Abstract:
The production of the X(3872) is studied in pp collisions at $ \sqrt{s}=7 $ TeV, using decays to J /ψπ + π − , where the J /ψ decays to two muons. The data were recorded by the CMS experiment and correspond to an integrated luminosity of 4.8 fb −1 . The measurements are performed in a kinematic range in which the X(3872) candidates have a transverse momentum 10 〈 p T 〈 50 GeV and rapidity | y | 〈 1 . 2. The ratio of the X(3872) and ψ (2S) cross sections times their branching fractions into J /ψπ + π − is measured as a function of p T . In addition, the fraction of X(3872) originating from B decays is determined. From these measurements the prompt X(3872) differential cross section times branching fraction as a function of p T is extracted. The π + π − mass spectrum of the J /ψπ + π − system in the X(3872) decays is also investigated.
Type of Medium:
Online Resource
ISSN:
1029-8479
DOI:
10.1007/JHEP04(2013)154
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2013
detail.hit.zdb_id:
2027350-2