Effect of a meson cloud on the jet nuclear modification factor in pA collisions
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We study the effect of the nucleon meson cloud on centrality dependence of the jet nuclear modification factor R pA. We find that the meson–baryon Fock components may lead to a noticeable deviation of R pA from unity. Our results for R pA show the same tendency as that observed by ATLAS in p + Pb collisions at √s = 5.02 TeV. The meson cloud suppresses the central jet events and enhances the peripheral jet events. However, quantitatively the effect is somewhat smaller than in the data.
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