Study of $J/\psi$ and $\psi(\mathrm{2S})$ production in$\sqrt{s_{_\textrm{NN}}} = 5.02\mathrm{~TeV}$ $p+\rm{Pb}$ and $\sqrt{s} = 2.76\mathrm{~TeV}$ pp collisions with the ATLAS detector

ATLAS Collaboration

Preprint/Internal Report

PUBDB-2015-03497

Study of $J/\psi$ and $\psi(\mathrm{2S})$ production in$\sqrt{s_{_\textrm{NN}}} = 5.02\mathrm{~TeV}$ $p+\rm{Pb}$ and $\sqrt{s} = 2.76\mathrm{~TeV}$ pp collisions with the ATLAS detector

ATLAS Collaboration (Collaboration author)DESY*

2015

Report No.: ATLAS-CONF-2015-023

Abstract: Measurements of J/ψ and ψ(2S) production in proton-lead collisions at proton-nucleon center-of-mass energy of sNN−−−√=5.02 TeV and in proton-proton collisions at center-of-mass energy of s√=2.76 TeV are presented. The measurements are based on data recorded in 2013 with the ATLAS detector, corresponding to integrated luminosities of 28.1 nb−1 and 4.0 pb−1 in p+Pb and pp, respectively. Measurements of differential cross sections and nuclear modification factors are presented for the di-muon decay channel in the center-of-mass rapidity interval −1.5<y∗μμ<1.5, over the range 8.5<pμμT<30 GeV

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