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Title: Nucleon dissociation and incoherent J / ψ photoproduction on nuclei in ion ultraperipheral collisions at the CERN Large Hadron Collider

Journal Article · · Physical Review. C

Using the general notion of cross section fluctuations in hadron-nucleus scattering at high energies, we derive an expression for the cross section of incoherent J/ψ photoproduction on heavy nuclei dσγA → J/ψY /dt, which includes both elastic dσγ → Jψp / dt and proton-dissociation dσγp → J/ψY /dt photoproduction on target nucleons. We find that, with good accuracy, dσγA → J/ψY /dt can be expressed as a product of the sum of the dσγp → J/ψp /dt and dσγp → J/ψY /dt cross sections, which have been measured at HERA, and the common nuclear shadowing factor, which is calculated using the leading twist nuclear shadowing model. Our prediction for the cross section of incoherent J/ψ photoproduction in Pb-Pb ultraperipheral collisions at √sNN = 2.76 TeV and y = 0, dσAA → J/ψAY (y = 0) / dy = 0.59 – 1.24 mb agrees within significant theoretical uncertainties with the data of the ALICE Collaboration.

Research Organization:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
FG02-93ER40771
OSTI ID:
1490502
Alternate ID(s):
OSTI ID: 1610236
Journal Information:
Physical Review. C, Journal Name: Physical Review. C Vol. 99 Journal Issue: 1; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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