${\rm Y}$ suppression at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV

Abstract

Inclusive ${\rm Y}$(1S) and ${\rm Y}$(2S) production have been measured in Pb-Pb collisions at the centre-of-mass energy per nucleon-nucleon pair $\sqrt{s_{{}_{\mathrm{NN}}}}=5.02$ TeV, using the ALICE detector at the CERN LHC. The ${\rm Y}$ mesons are reconstructed in the centre-of-mass rapidity interval $2.5<y<4$ and in the transverse-momentum range $p_{\mathrm{T}}<15$ GeV/$c$, via their decays to muon pairs. In this Letter, we present results on the inclusive ${\rm Y}$(1S) nuclear modification factor $R_{\mathrm{AA}}$ as a function of collision centrality, transverse momentum and rapidity. The ${\rm Y}$(1S) and ${\rm Y}$(2S) $R_{\mathrm{AA}}$, integrated over the centrality range 0-90%, are $0.37\pm 0.02(\mathrm{stat})\pm 0.03(\mathrm{syst})$ and $0.10\pm 0.04(\mathrm{stat})\pm 0.02(\mathrm{syst})$, respectively, leading to a ratio $R_{\mathrm{AA}}^{{\rm Y}(2S)}/R_{\mathrm{AA}}^{{\rm Y}(1S)}$ of $0.28\pm 0.12\text{(stat)}\pm 0.06\text{(syst)}$. The observed ${\rm Y}$(1S) suppression increases with the centrality of the collision and no significant variation is observed as a function of transverse momentum and rapidity.

20 pages, 2 captioned figures, 2 tables, authors from page 15, published, figures at http://aliceinfo.cern.ch/ArtSubmission/node/4286

References in corpus (18)

• Heavy quarkonium: progress, puzzles, and opportunities
• Glauber Modeling in High Energy Nuclear Collisions
• EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
• Observation of sequential Upsilon suppression in PbPb collisions
• Static quark-antiquark potential in the quark-gluon plasma from lattice QCD
• Color Screening and Regeneration of Bottomonia in High-Energy Heavy-Ion Collisions
• J/psi production at high transverse momentum in p+p and Cu+Cu collisions at \sNN=200GeV
• Measurement of quarkonium production in proton--lead and proton--proton collisions at $5.02$ $\mathrm{TeV}$ with the ATLAS detector
• Suppression of ${\rm Y}$(1S) at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Bottomonium suppression using a lattice QCD vetted potential
• Production of inclusive ${\rm Y}$(1S) and ${\rm Y}$(2S) in p-Pb collisions at $\sqrt{{\mathbf{s}}_{\mathrm{NN}}}=5.02$ TeV
• Study of ${\rm Y}$ production and cold nuclear matter effects in pPb collisions at $\sqrt{s_{NN}}=5\mathrm{TeV}$
• Measurement of the polarization of the ${\rm Y}(1S)$ and ${\rm Y}(2S)$ states in $p\bar{p}$ collisions at $\sqrt{s}=$1.96 TeV
• Measuring Quark-Gluon-Plasma Thermalization Time with Dileptons
• Hard scattering cross sections at LHC in the Glauber approach: from pp to pA and AA collisions
• Polarization of prompt $J/\psi$ and ${\rm Y}$(1S) production in the color evaporation model
• Υ Production in Heavy Ion Collisions at LHC
• Performance of the RPC-based ALICE muon trigger system at the LHC

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