Title
Measurement of the X(3872) production cross section via decays to <tex>$J/\psi\pi^{+}\pi^{-}$</tex> in pp collisions at <tex>$\sqrt{s}=7TeV$</tex> Measurement of the X(3872) production cross section via decays to <tex>$J/\psi\pi^{+}\pi^{-}$</tex> in pp collisions at <tex>$\sqrt{s}=7TeV$</tex>
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Bristol ,
Subject
Physics
Source (journal)
Journal of high energy physics. - Bristol
Volume/pages
(2013) :4 , 39 p.
ISSN
1126-6708
1029-8479
1029-8479
Article Reference
154
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The production of the X(3872) is studied in pp collisions at root s = 7TeV, using decays to J/psi pi(+)pi(-), where the J/psi 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 vertical bar y vertical bar < 1.2. The ratio of the X(3872) and (2S) cross sections times their branching fractions into J/psi pi(+)pi(-) 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 pi(+)pi(-) mass spectrum of the J/psi pi(+)pi(-) system in the X(3872) decays is also investigated.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/4e39c7/4744.pdf
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