Measurement of nuclear effects on $\psi (2S)$ production in p-Pb collisions at $\sqrt{{\text{s}}_{\mathrm{NN}}}=8.16$ TeV

Abstract

Inclusive $\psi$(2S) production is measured in p-Pb collisions at the centre-of-mass energy per nucleon-nucleon pair $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV, using the ALICE detector at the CERN LHC. The production of $\psi$(2S) is studied at forward ($2.03<y_{\mathrm{cms}}<3.53$) and backward ($-4.46<y_{\mathrm{cms}}<-2.96$) centre-of-mass rapidity and for transverse momentum $p_{\mathrm{T}}$ $<$ 12 GeV/$c$ via the decay to muon pairs. In this paper, we report the integrated as well as the $y_{\mathrm{cms}}$- and $p_{\mathrm{T}}$-differential inclusive production cross sections. Nuclear effects on $\psi$(2S) production are studied via the determination of the nuclear modification factor that shows a strong suppression at both forward and backward centre-of-mass rapidities. Comparisons with corresponding results for inclusive J/$\psi$ show a similar suppression for the two states at forward rapidity (p-going direction), but a stronger suppression for $\psi$(2S) at backward rapidity (Pb-going direction). As a function of $p_{\mathrm{T}}$, no clear dependence of the nuclear modification factor is found. The relative size of nuclear effects on $\psi$(2S) production compared to J/$\psi$ is also studied via the double ratio of production cross sections $[{\sigma }_{\psi (2S)}/{\sigma }_{J/\psi }{]}_{\mathrm{pPb}}/[{\sigma }_{\psi (2S)}/{\sigma }_{J/\psi }{]}_{\mathrm{pp}}$ between p-Pb and pp collisions. The results are compared with theoretical models that include various effects related to the initial and final state of the collision system and also with previous measurements at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV.

arXiv comment24 pages, 11 captioned figures, 1 table, authors from page 19, published version, figures at http://alice-publications.web.cern.ch/node/6170

References in corpus (50)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• The Color Glass Condensate
• Performance of the ALICE Experiment at the CERN LHC
• EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
• (Non)Thermal Aspects of Charmonium Production and a New Look at J/$\psi$ Suppression
• EPPS16: Nuclear parton distributions with LHC data
• nCTEQ15 - Global analysis of nuclear parton distributions with uncertainties in the CTEQ framework
• Enhanced J/Psi Production in Deconfined Quark Matter
• Performance of the ALICE VZERO system
• Alignment of the ALICE Inner Tracking System with cosmic-ray tracks
• Towards an automated tool to evaluate the impact of the nuclear modification of the gluon density on quarkonium, D and B meson production in proton-nucleus collisions
• J/psi (psi') production at the Tevatron and LHC at O(α_s^4v^4) in nonrelativistic QCD
• Sequential Regeneration of Charmonia in Heavy-Ion Collisions
• Predictions for $p+$Pb Collisions at sqrt s_NN = 5 TeV
• Rapidity and transverse momentum dependence of inclusive J/$\psi$ production in pp collisions at $\sqrt{s}=7$ TeV
• Comprehensive description of $J/\psi$ production in proton-proton collisions at collider energies
• J/$\psi$ suppression at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Gluon Shadowing in Heavy-Flavor Production at the LHC
• Measurement of prompt and nonprompt charmonium suppression in PbPb collisions at 5.02 TeV
• Prompt and non-prompt $J/\psi$ and $\psi (2\mathrm{S})$ suppression at high transverse momentum in 5.02 TeV Pb+Pb collisions with the ATLAS experiment
• Measurement of quarkonium production in proton--lead and proton--proton collisions at $5.02$ $\mathrm{TeV}$ with the ATLAS detector
• J/psi suppression in p-A collisions from parton energy loss in cold QCD matter
• D-meson production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV and in pp collisions at $\sqrt{s}=7$ TeV
• J/$\psi$ production and nuclear effects in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• $J/\psi$ production and suppression in high energy proton-nucleus collisions
• Differential studies of inclusive J/$\psi$ and $\psi$(2S) production at forward rapidity in Pb-Pb collisions at $\sqrt{{\text{s}}_{{}_{\mathbf{NN}}}}$ = 2.76 TeV
• Prompt and nonprompt J/$\psi$ production and nuclear modification in $p$Pb collisions at $\sqrt{s_{\text{NN}}}=8.16$ TeV
• Centrality and pT dependence of J/psi suppression in proton-nucleus collisions from parton energy loss
• Rapidity and transverse-momentum dependence of the inclusive J/$\psi$ nuclear modification factor in p-Pb collisions at $\sqrt{{\text{s}}_{\mathbf{NN}}}=5.02$ TeV
• Measurement of prompt and nonprompt J/psi production in pp and pPb collisions at sqrt(s[NN]) = 5.02 TeV
• Centrality dependence of inclusive J/$\psi$ production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Suppression of $\psi$(2S) production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Predictions for Cold Nuclear Matter Effects in $p+$Pb Collisions at $\sqrt{s_{{}_{NN}}}=8.16$ TeV
• Measurement of prompt psi(2S) to J/psi yield ratios in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV
• Energy dependence of forward-rapidity J/$\psi$ and $\psi (2S)$ production in pp collisions at the LHC
• Impact parameter dependence of the nuclear modification of J/psi production in d+Au collisions at sqrt(S_NN) = 200 GeV
• Measurement of inclusive $J/\psi$ suppression in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV through the dimuon channel at STAR
• Centrality and transverse momentum dependence of inclusive J/$\psi$ production at midrapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Inclusive quarkonium production at forward rapidity in pp collisions at $\sqrt{s}=8$ TeV
• Relative modification of prompt psi(2S) and J/psi yields from pp to PbPb collisions at sqrt(s[NN]) = 5.02 TeV
• Centrality dependence of $\psi$(2S) suppression in p-Pb collisions at $\sqrt{{\text{s}}_{\mathrm{NN}}}$ = 5.02 TeV
• Forward $J/\psi$ production at high energy: centrality dependence and mean transverse momentum
• Quarkonium suppression in heavy-ion collisions from coherent energy loss in cold nuclear matter
• Study of $\psi (2S)$ production and cold nuclear matter effects in pPb collisions at $\sqrt{s_{NN}}=5\mathrm{TeV}$
• $\psi (2S)$ versus $J/\psi$ suppression in proton-nucleus collisions from factorization violating soft color exchanges
• Measurement of the relative yields of $\psi (2S)$ to $\psi (1S)$ mesons produced at forward and backward rapidity in $p$$+$$p$, $p$$+$Al, $p$$+$Au, and ${}^3$He$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Measurement of differential $J/\psi$ production cross-sections and forward-backward ratio in p+Pb collisions with the ATLAS detector
• Measurement of prompt $\psi$(2S) production cross sections in proton-lead and proton-proton collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=$ 5.02 TeV
• Inclusive J/$\psi$ production at forward and backward rapidity in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV
• J/$\psi$ production as a function of charged-particle pseudorapidity density in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV

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• The ALICE experiment: a journey through QCD
• 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 the prompt $D^0$ nuclear modification factor in $p$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV
• Prospects for quarkonium studies at the high-luminosity LHC
• General balance functions of identified charged hadron pairs of $(\pi ,\mathrm{K},\mathrm{p})$ in Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Modification of ${\chi }_{c1}$(3872) and $\psi$(2$S$) production in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV
• 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
• Testing a Conjecture On Quantum Chromodynamics
• Observation of the charged-particle multiplicity dependence of ${\sigma }_{\psi (2S)}/{\sigma }_{\text{J}/\psi }$ in pPb collisions at 8.16 TeV