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dc.contributor.authorKARASU UYSAL, AYBEN
dc.contributor.authorCOLLABORATION, ALICE
dc.date.accessioned2020-01-17T08:39:30Z
dc.date.available2020-01-17T08:39:30Z
dc.date.issued2019-09-10
dc.identifier.urihttp://hdl.handle.net/20.500.12498/1626
dc.description.abstractThe ALICE collaboration performed the first rapidity-differential measurement of coherent J/ψ photoproduction in ultra-peripheral Pb-Pb collisions at a center-of-mass energy sNN‾‾‾‾√ = 5.02 TeV. The J/ψ is detected via its dimuon decay in the forward rapidity region (−4.0<y<−2.5) for events where the hadronic activity is required to be minimal. The analysis is based on an event sample corresponding to an integrated luminosity of about 750 μb−1. The cross section for coherent J/ψ production is presented in six rapidity bins. The results are compared with theoretical models for coherent J/ψ photoproduction. These comparisons indicate that gluon shadowing effects play a role in the photoproduction process. The ratio of ψ′ to J/ψ coherent photoproduction cross sections was measured and found to be consistent with that measured for photoproduction off protons.en_US
dc.subjectJ/ψ photoproduction, ALICE, LHCen_US
dc.titleCoherent J/ψ photo production at forward rapidity in ultra-peripheral Pb–Pb collisions at sNN = 5.02 TeVen_US
dc.typeArticleen_US


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