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J production as a function of charged-particle multiplicity in p-Pb collisions at \( \sqrt{s_{\mathrm{NN}}} \) = 8.16 TeV

A preprint version of the article is available at arXiv.

Abstract

Inclusive J yields and average transverse momenta in p-Pb collisions at a center-of-mass energy per nucleon pair \( \sqrt{s_{\mathrm{NN}}} \) = 8.16 TeV are measured as a function of the charged-particle pseudorapidity density with ALICE. The J mesons are reconstructed at forward (2.03 < ycms < 3.53) and backward (4.46 < ycms < −2.96) center-of-mass rapidity in their dimuon decay channel while the charged-particle pseudorapidity density is measured around midrapidity. The J yields at forward and backward rapidity normalized to their respective average values increase with the normalized charged-particle pseudorapidity density, the former showing a weaker increase than the latter. The normalized average transverse momenta at forward and backward rapidity manifest a steady increase from low to high charged-particle pseudorapidity density with a saturation beyond the average value.

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