Measurements of differential cross-sections for J/ production in p+Pb collisions at s₍₍ = 5. 02 TeV at the LHC with the ATLAS detector are presented. The data set used corresponds to an integrated luminosity of 28. 1 nb^-1. The J/ mesons are reconstructed in the dimuon decay channel over the transverse momentum range 8<pₓ<30 GeV and over the center-of-mass rapidity range -2. 87<y^*<1. 94. Prompt J/ are separated from J/ resulting from b-hadron decays through an analysis of the distance between the J/ decay vertex and the event primary vertex. The differential cross-section for production of nonprompt J/ is compared to a FONLL calculation that does not include nuclear effects. Forward-backward production ratios are presented and compared to theoretical predictions. These results constrain the kinematic dependence of nuclear modifications of charmonium and b-quark production in p+Pb collisions.
Aad et al. (Mon,) studied this question.
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