Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at s NN =5.02 TeV

The CMS Collaboration, cms-publication-committee-chair@cern.ch

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead–lead (PbPb) and proton–proton (pp) collisions at s NN =5.02 TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, R AA , derived from the PbPb-to-pp ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, R AA (ϒ(1S))>R AA (ϒ(2S))>R AA (ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at s NN =2.76TeV, although the two are compatible within uncertainties. The upper limit on the R AA of ϒ(3S) integrated over p T , rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date.

Original languageEnglish
Pages (from-to)270-293
Number of pages24
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume790
DOIs
Publication statusPublished - 10 Mar 2019

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mesons
retarding
collisions
transverse momentum
ionic collisions
confidence
momentum
detectors
cross sections

Keywords

  • Bottomonium
  • CMS
  • Heavy ion collisions
  • Physics
  • Quark gluon plasma
  • Quarkonium suppression

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at s NN =5.02 TeV. / The CMS Collaboration, cms-publication-committee-chair@cern.ch.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 790, 10.03.2019, p. 270-293.

Research output: Contribution to journalArticle

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title = "Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at s NN =5.02 TeV",
abstract = "The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead–lead (PbPb) and proton–proton (pp) collisions at s NN =5.02 TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, R AA , derived from the PbPb-to-pp ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, R AA (ϒ(1S))>R AA (ϒ(2S))>R AA (ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at s NN =2.76TeV, although the two are compatible within uncertainties. The upper limit on the R AA of ϒ(3S) integrated over p T , rapidity and centrality is 0.096 at 95{\%} confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date.",
keywords = "Bottomonium, CMS, Heavy ion collisions, Physics, Quark gluon plasma, Quarkonium suppression",
author = "{The CMS Collaboration, cms-publication-committee-chair@cern.ch} and Sirunyan, {A. M.} and A. Tumasyan and W. Adam and F. Ambrogi and E. Asilar and T. Bergauer and J. Brandstetter and E. Brondolin and M. Dragicevic and J. Er{\"o} and {Escalante Del Valle}, A. and M. Flechl and M. Friedl and R. Fr{\"u}hwirth and Ghete, {V. M.} and J. Grossmann and J. Hrubec and M. Jeitler and A. K{\"o}nig and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and E. Pree and N. Rad and H. Rohringer and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and D. Spitzbart and A. Taurok and W. Waltenberger and J. Wittmann and Wulz, {C. E.} and M. Zarucki and V. Chekhovsky and V. Mossolov and {Suarez Gonzalez}, J. and Kim, {J. H.} and Kim, {J. H.} and Kim, {J. H.} and A. Zarubin and Y. Ivanov and V. Kim and V. Oreshkin and S. Vavilov and V. Popov and A. Ershov and A. Babaev",
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T1 - Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at s NN =5.02 TeV

AU - The CMS Collaboration, cms-publication-committee-chair@cern.ch

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Asilar, E.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Brondolin, E.

AU - Dragicevic, M.

AU - Erö, J.

AU - Escalante Del Valle, A.

AU - Flechl, M.

AU - Friedl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Grossmann, J.

AU - Hrubec, J.

AU - Jeitler, M.

AU - König, A.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Pree, E.

AU - Rad, N.

AU - Rohringer, H.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Spitzbart, D.

AU - Taurok, A.

AU - Waltenberger, W.

AU - Wittmann, J.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Chekhovsky, V.

AU - Mossolov, V.

AU - Suarez Gonzalez, J.

AU - Kim, J. H.

AU - Kim, J. H.

AU - Kim, J. H.

AU - Zarubin, A.

AU - Ivanov, Y.

AU - Kim, V.

AU - Oreshkin, V.

AU - Vavilov, S.

AU - Popov, V.

AU - Ershov, A.

AU - Babaev, A.

PY - 2019/3/10

Y1 - 2019/3/10

N2 - The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead–lead (PbPb) and proton–proton (pp) collisions at s NN =5.02 TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, R AA , derived from the PbPb-to-pp ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, R AA (ϒ(1S))>R AA (ϒ(2S))>R AA (ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at s NN =2.76TeV, although the two are compatible within uncertainties. The upper limit on the R AA of ϒ(3S) integrated over p T , rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date.

AB - The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead–lead (PbPb) and proton–proton (pp) collisions at s NN =5.02 TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, R AA , derived from the PbPb-to-pp ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, R AA (ϒ(1S))>R AA (ϒ(2S))>R AA (ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at s NN =2.76TeV, although the two are compatible within uncertainties. The upper limit on the R AA of ϒ(3S) integrated over p T , rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date.

KW - Bottomonium

KW - CMS

KW - Heavy ion collisions

KW - Physics

KW - Quark gluon plasma

KW - Quarkonium suppression

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U2 - 10.1016/j.physletb.2019.01.006

DO - 10.1016/j.physletb.2019.01.006

M3 - Article

AN - SCOPUS:85060438181

VL - 790

SP - 270

EP - 293

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -