In:
Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2013, No. 10 ( 2013-10)
Abstract:
Prompt production of charmonium χ c 0 , χ c 1 and χ c 2 mesons is studied using proton-proton collisions at the LHC at a centre-of-mass energy of $ \sqrt{s}=7 $ TeV. The χ c mesons are identified through their decay to J/ ψγ, with J/ ψ → μ + μ − using photons that converted in the detector. A data sample, corresponding to an integrated luminosity of 1.0 fb −1 collected by the LHCb detector, is used to measure the relative prompt production rate of χ c 1 and χ c 2 in the rapidity range 2 . 0 〈 y 〈 4 . 5 as a function of the J/ ψ transverse momentum from 3 to 20 GeV /c . First evidence for χ c 0 meson production at a high-energy hadron collider is also presented.
Type of Medium:
Online Resource
ISSN:
1029-8479
DOI:
10.1007/JHEP10(2013)115
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2013
detail.hit.zdb_id:
2027350-2
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