${\rm Y}$ production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV

Abstract

${\rm Y}$ production in p-Pb interactions is studied at the centre-of-mass energy per nucleon-nucleon collision $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV with the ALICE detector at the CERN LHC. The measurement is performed reconstructing bottomonium resonances via their dimuon decay channel, in the centre-of-mass rapidity intervals $2.03<y_{\mathrm{cms}}<3.53$ and $-4.46<y_{\mathrm{cms}}<-2.96$, down to zero transverse momentum. In this work, results on the inclusive ${\rm Y}(1\mathrm{S})$ production cross section as a function of rapidity and transverse momentum are presented. The corresponding nuclear modification factor shows a suppression of the ${\rm Y}(1\mathrm{S})$ yields with respect to pp collisions, both at forward and backward rapidity. This suppression is stronger in the low transverse momentum region and shows no significant dependence on the centrality of the interactions. Furthermore, the ${\rm Y}(2\mathrm{S})$ nuclear modification factor is also evaluated, suggesting a suppression similar to that of the ${\rm Y}(1\mathrm{S})$. A first measurement of the ${\rm Y}(3\mathrm{S})$ has also been performed. Finally, results are compared with previous measurements performed by ALICE in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV and with theoretical calculations.

25 pages, 11 captioned figures, 1 table, authors from page 20, published version, figures at http://alice-publications.web.cern.ch/node/5655

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Cited by in corpus (12)

• The ALICE experiment: a journey through QCD
• Heavy quarks and jets as probes of the QGP
• Impact of heavy quark and quarkonium data on nuclear gluon PDFs
• ${\rm Y}$ production and nuclear modification at forward rapidity in Pb-Pb collisions at $\sqrt{{\text{s}}_{\text{NN}}}=5.02$ TeV
• Reweighted nuclear PDFs using Heavy-Flavor Production Data at the LHC: nCTEQ15_rwHF & EPPS16_rwHF
• 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
• Centrality dependence of J/$\psi$ and $\psi$(2S) production and nuclear modification in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 8.16 TeV
• Bottomonium spectroscopy in the quark-gluon plasma
• Multiplicity dependence of ${\rm Y}$ production at forward rapidity in pp collisions at $\sqrt{s}$ = 13 TeV
• Inclusive diffractive heavy quarkonium photoproduction including quark subprocesses
• Non-Markovian dynamics of bottomonia in the QGP