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      J/\(\psi\) production as a function of charged-particle multiplicity in p-Pb collisions at \(\sqrt{\textit{s}_{\rm NN}}~=~8.16\) TeV

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          Abstract

          Inclusive J/\(\psi\) yields and average transverse momenta in p-Pb collisions at a center-of-mass energy per nucleon pair \(\sqrt{s_{\rm NN}}\) = 8.16 TeV are measured as a function of the charged-particle pseudorapidity density with ALICE. The J/\(\psi\) mesons are reconstructed at forward \((2.03 < y_{\rm cms} < 3.53)\) and backward (\(-4.46 < y_{\rm cms} < -2.96\)) center-of-mass rapidity in their dimuon decay channel while the charged-particle pseudorapidity density is measured around midrapidity. The J/\(\psi\) 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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          Author and article information

          Journal
          27 April 2020
          Article
          2004.12673
          e138c076-46ec-4159-86d0-31ecf25b9fcc

          http://creativecommons.org/licenses/by/4.0/

          History
          Custom metadata
          CERN-EP-2020-058
          25 pages, 8 captioned figures, 3 tables, authors from page 20, submitted to JHEP, figures at http://alice-publications.web.cern.ch/node/6207
          nucl-ex hep-ex
          Alice Collaboration

          High energy & Particle physics,Nuclear physics
          High energy & Particle physics, Nuclear physics

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