Measurement of prompt $\psi$(2S) production cross sections in proton-lead and proton-proton collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=$ 5.02 TeV

Abstract

Measurements of prompt $\psi$(2S) meson production cross sections in proton-lead (pPb) and proton-proton (pp) collisions at a nucleon-nucleon center-of-mass energy of $\sqrt{s_{{}_{\mathrm{NN}}}}=$ 5.02 TeV are reported. The results are based on pPb and pp data collected by the CMS experiment at the LHC, corresponding to integrated luminosities of 34.6 nb${}^{-1}$ and 28.0 pb${}^{-1}$, respectively. The nuclear modification factor $R_{\mathrm{pPb}}$ is measured for prompt $\psi$(2S) in the transverse momentum range 4 $<$ p${}_{\mathrm{T}}$ $<$ 30 GeV$/c$ and the center-of-mass rapidity range $-$2.4 $<y_{\mathrm{cm}}<$ 1.93. The results on $\psi$(2S) $R_{\mathrm{pPb}}$ are compared to the corresponding modification factor for prompt J$/\psi$ mesons. The results point to different nuclear effects at play in the production of the excited charmonium state compared to the ground state, in the region of backward rapidity and for p${}_{\mathrm{T}}$ $<$ 10 GeV$/c$.

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIN-16-015 (CMS Public Pages)

References in corpus (10)

• PYTHIA 6.4 Physics and Manual
• An Introduction to PYTHIA 8.2
• Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV
• Observation of sequential Upsilon suppression in PbPb collisions
• Energy dependence of J/psi absorption in proton-nucleus collisions
• Measurement of quarkonium production in proton--lead and proton--proton collisions at $5.02$ $\mathrm{TeV}$ with the ATLAS detector
• Production of inclusive ${\rm Y}$(1S) and ${\rm Y}$(2S) in p-Pb collisions at $\sqrt{{\mathbf{s}}_{\mathrm{NN}}}=5.02$ TeV
• Kinematic distributions and nuclear effects of $J/\psi$ production in 920 GeV fixed-target proton-nucleus collisions
• Study of ${\rm Y}$ production and cold nuclear matter effects in pPb collisions at $\sqrt{s_{NN}}=5\mathrm{TeV}$
• Measurement of prompt psi(2S) to J/psi yield ratios in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV

Cited by in corpus (21)

• Heavy quarks and jets as probes of the QGP
• The Present and Future of QCD
• In-Medium Charmonium Production in Proton-Nucleus Collisions
• Observation of multiplicity-dependent prompt ${\chi }_{c1}(3872)$ and $\psi (2S)$ production in $pp$ collisions
• Impact of heavy quark and quarkonium data on nuclear gluon PDFs
• Measurement of $J/\psi$ at forward and backward rapidity in $p$+$p$, $p$$+A$l, $p$$+A$u, and ${}^3$He+Au collisions at $\sqrt{s_{{}_{NN}}}=200\mathrm{GeV}$
• Nuclear modification of ${\rm Y}$ states in pPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV
• Measurement of nuclear effects on $\psi (2S)$ production in p-Pb collisions at $\sqrt{{\text{s}}_{\mathrm{NN}}}=8.16$ TeV
• Prospects for quarkonium studies at the high-luminosity LHC
• Modification of ${\chi }_{c1}$(3872) and $\psi$(2$S$) production in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV
• Global analysis of $\psi (2S)$ inclusive hadroproduction at next-to-leading order in nonrelativistic-QCD factorization
• Excitation function of initial temperature of heavy flavor quarkonium emission source in high energy collisions
• Centrality dependence of J/$\psi$ and $\psi$(2S) production and nuclear modification in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 8.16 TeV
• Measurement of the prompt-production cross-section ratio $\sigma ({\chi }_{c2})/\sigma ({\chi }_{c1})$ in $p$Pb collisions at $\sqrt{s_{NN}}$ = 8.16 TeV
• Inclusive, prompt and non-prompt $\mathrm{J}/\psi$ production at midrapidity in p$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Non-thermal distributions of charm and charmonium in relativistic heavy-ion collisions
• Observation of the charged-particle multiplicity dependence of ${\sigma }_{\psi (2S)}/{\sigma }_{\text{J}/\psi }$ in pPb collisions at 8.16 TeV
• Multiplicity dependence of ${\rm Y}$ production at forward rapidity in pp collisions at $\sqrt{s}$ = 13 TeV
• Absorption of $\psi (2S)$ mesons in nuclei
• Results on heavy ion physics at LHCb
• Absorption of 1$P$-wave heavy charmonium ${\chi }_{c1}(1P)$ in nuclei