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Title: Exclusive photoproduction of J/ψ and ψ(2S) in pp and AA collisions

The amplitude for γp → J/ψp(γp → ψ'p) is calculated in a pQCD k{sub ⊥}-factorization approach. The total cross section for this process is calculated for different unintegrated gluon distributions and compared with the HERA data and the data extracted recently by the LHCb collaboration. The amplitude for γp → J/ψp(γp → ψ'p) is used to predict the cross section for exclusive photoproduction of the J/ψ(ψ') meson in proton-proton and nucleus-nucleus collisions. In the pp case, compared to earlier calculations we include both Dirac and Pauli electromagnetic form factors. We also discuss the dependence of nuclear shadowing on the charmonium state.
Authors:
 [1] ;  [2] ;  [2] ;  [3]
  1. University of Rzeszów (Poland)
  2. Institute of Nuclear Physics PAN, Kraków (Poland)
  3. (Poland)
Publication Date:
OSTI Identifier:
22391384
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1654; Journal Issue: 1; Conference: DIFFRACTION 2014: International Workshop on Diffraction in High-Energy Physics, Primosten (Croatia), 10-16 Sep 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COMPARATIVE EVALUATIONS; EXCLUSIVE INTERACTIONS; FACTORIZATION; GLUONS; HERA STORAGE RING; J PSI-3097 MESONS; PHOTON-PROTON INTERACTIONS; PHOTOPRODUCTION; PROTONS; PSI-3685 MESONS; SCATTERING AMPLITUDES; TOTAL CROSS SECTIONS