Inclusive J/psi production at forward and backward rapidity in p-Pb collisions at root s(NN)=8.16 TeV

The ALICE Collaboration, S. Acharya, E. J. Brucken, B. Chang, T. E. Hilden, D. J. Kim, V. Litichevskyi, M. M. Mieskolainen, R. Orava, J. E. Parkkila, J. Rak, S. S. Räsänen, S. Saarinen, M. Slupecki, T. W. Snellman, W. H. Trzaska, M. Vargyas, J. Viinikainen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Inclusive J/psi production is studied in p-Pb interactions at a centre-of-mass energy per nucleon-nucleon collision root s(NN) = 8.16 TeV, using the ALICE detector at the CERN LHC. The J/psi meson is reconstructed, via its decay to a muon pair, in the centreof-mass rapidity intervals 2.03 < Y-cms < 3.53 and -4.46 < Y-cms < -2.96, where positive and negative Y(cms )refer to the p-going and Pb-going direction, respectively. The transverse momentum coverage is PT < 20 GeV/c. In this paper, Y-cms- and P-T-differential cross sections for inclusive J/psi production are presented, and the corresponding nuclear modification factors R-pPb are shown. Forward results show a suppression of the J/psi yield with respect to pp collisions, concentrated in the region P-T less than or similar to 5 GeV/c. At backward rapidity no significant suppression is observed. The results are compared to previous measurements by ALICE in p-Pb collisions at root s(NN) = 5.02 TeV and to theoretical calculations. Finally, the ratios R-FB between forward- and backward-Y-cms R-pPb values are shown and discussed.
Original languageEnglish
Article number160
JournalJournal of High Energy Physics
Volume2018
Issue number7
Number of pages27
ISSN1029-8479
DOIs
Publication statusPublished - 25 Jul 2018
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 114 Physical sciences
  • Heavy Ion Experiments
  • TRANSVERSE-MOMENTUM DEPENDENCE
  • RANGE ANGULAR-CORRELATIONS
  • PROTON-NUCLEUS COLLISIONS
  • LONG-RANGE
  • CHARMONIUM PRODUCTION
  • PPB COLLISIONS
  • SUPPRESSION
  • LHC
  • ENERGY
  • COMOVERS

Cite this

The ALICE Collaboration, Acharya, S., Brucken, E. J., Chang, B., Hilden, T. E., Kim, D. J., ... Viinikainen, J. (2018). Inclusive J/psi production at forward and backward rapidity in p-Pb collisions at root s(NN)=8.16 TeV. Journal of High Energy Physics, 2018(7), [160]. https://doi.org/10.1007/JHEP07(2018)160
The ALICE Collaboration ; Acharya, S. ; Brucken, E. J. ; Chang, B. ; Hilden, T. E. ; Kim, D. J. ; Litichevskyi, V. ; Mieskolainen, M. M. ; Orava, R. ; Parkkila, J. E. ; Rak, J. ; Räsänen, S. S. ; Saarinen, S. ; Slupecki, M. ; Snellman, T. W. ; Trzaska, W. H. ; Vargyas, M. ; Viinikainen, J. / Inclusive J/psi production at forward and backward rapidity in p-Pb collisions at root s(NN)=8.16 TeV. In: Journal of High Energy Physics. 2018 ; Vol. 2018, No. 7.
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title = "Inclusive J/psi production at forward and backward rapidity in p-Pb collisions at root s(NN)=8.16 TeV",
abstract = "Inclusive J/psi production is studied in p-Pb interactions at a centre-of-mass energy per nucleon-nucleon collision root s(NN) = 8.16 TeV, using the ALICE detector at the CERN LHC. The J/psi meson is reconstructed, via its decay to a muon pair, in the centreof-mass rapidity intervals 2.03 < Y-cms < 3.53 and -4.46 < Y-cms < -2.96, where positive and negative Y(cms )refer to the p-going and Pb-going direction, respectively. The transverse momentum coverage is PT < 20 GeV/c. In this paper, Y-cms- and P-T-differential cross sections for inclusive J/psi production are presented, and the corresponding nuclear modification factors R-pPb are shown. Forward results show a suppression of the J/psi yield with respect to pp collisions, concentrated in the region P-T less than or similar to 5 GeV/c. At backward rapidity no significant suppression is observed. The results are compared to previous measurements by ALICE in p-Pb collisions at root s(NN) = 5.02 TeV and to theoretical calculations. Finally, the ratios R-FB between forward- and backward-Y-cms R-pPb values are shown and discussed.",
keywords = "114 Physical sciences, Heavy Ion Experiments, TRANSVERSE-MOMENTUM DEPENDENCE, RANGE ANGULAR-CORRELATIONS, PROTON-NUCLEUS COLLISIONS, LONG-RANGE, CHARMONIUM PRODUCTION, PPB COLLISIONS, SUPPRESSION, LHC, ENERGY, COMOVERS",
author = "{The ALICE Collaboration} and S. Acharya and Brucken, {E. J.} and B. Chang and Hilden, {T. E.} and Kim, {D. J.} and V. Litichevskyi and Mieskolainen, {M. M.} and R. Orava and Parkkila, {J. E.} and J. Rak and R{\"a}s{\"a}nen, {S. S.} and S. Saarinen and M. Slupecki and Snellman, {T. W.} and Trzaska, {W. H.} and M. Vargyas and J. Viinikainen",
year = "2018",
month = "7",
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The ALICE Collaboration, Acharya, S, Brucken, EJ, Chang, B, Hilden, TE, Kim, DJ, Litichevskyi, V, Mieskolainen, MM, Orava, R, Parkkila, JE, Rak, J, Räsänen, SS, Saarinen, S, Slupecki, M, Snellman, TW, Trzaska, WH, Vargyas, M & Viinikainen, J 2018, 'Inclusive J/psi production at forward and backward rapidity in p-Pb collisions at root s(NN)=8.16 TeV', Journal of High Energy Physics, vol. 2018, no. 7, 160. https://doi.org/10.1007/JHEP07(2018)160

Inclusive J/psi production at forward and backward rapidity in p-Pb collisions at root s(NN)=8.16 TeV. / The ALICE Collaboration; Acharya, S.; Brucken, E. J.; Chang, B.; Hilden, T. E.; Kim, D. J.; Litichevskyi, V.; Mieskolainen, M. M.; Orava, R.; Parkkila, J. E.; Rak, J.; Räsänen, S. S.; Saarinen, S.; Slupecki, M.; Snellman, T. W.; Trzaska, W. H.; Vargyas, M.; Viinikainen, J.

In: Journal of High Energy Physics, Vol. 2018, No. 7, 160, 25.07.2018.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Inclusive J/psi production at forward and backward rapidity in p-Pb collisions at root s(NN)=8.16 TeV

AU - The ALICE Collaboration

AU - Acharya, S.

AU - Brucken, E. J.

AU - Chang, B.

AU - Hilden, T. E.

AU - Kim, D. J.

AU - Litichevskyi, V.

AU - Mieskolainen, M. M.

AU - Orava, R.

AU - Parkkila, J. E.

AU - Rak, J.

AU - Räsänen, S. S.

AU - Saarinen, S.

AU - Slupecki, M.

AU - Snellman, T. W.

AU - Trzaska, W. H.

AU - Vargyas, M.

AU - Viinikainen, J.

PY - 2018/7/25

Y1 - 2018/7/25

N2 - Inclusive J/psi production is studied in p-Pb interactions at a centre-of-mass energy per nucleon-nucleon collision root s(NN) = 8.16 TeV, using the ALICE detector at the CERN LHC. The J/psi meson is reconstructed, via its decay to a muon pair, in the centreof-mass rapidity intervals 2.03 < Y-cms < 3.53 and -4.46 < Y-cms < -2.96, where positive and negative Y(cms )refer to the p-going and Pb-going direction, respectively. The transverse momentum coverage is PT < 20 GeV/c. In this paper, Y-cms- and P-T-differential cross sections for inclusive J/psi production are presented, and the corresponding nuclear modification factors R-pPb are shown. Forward results show a suppression of the J/psi yield with respect to pp collisions, concentrated in the region P-T less than or similar to 5 GeV/c. At backward rapidity no significant suppression is observed. The results are compared to previous measurements by ALICE in p-Pb collisions at root s(NN) = 5.02 TeV and to theoretical calculations. Finally, the ratios R-FB between forward- and backward-Y-cms R-pPb values are shown and discussed.

AB - Inclusive J/psi production is studied in p-Pb interactions at a centre-of-mass energy per nucleon-nucleon collision root s(NN) = 8.16 TeV, using the ALICE detector at the CERN LHC. The J/psi meson is reconstructed, via its decay to a muon pair, in the centreof-mass rapidity intervals 2.03 < Y-cms < 3.53 and -4.46 < Y-cms < -2.96, where positive and negative Y(cms )refer to the p-going and Pb-going direction, respectively. The transverse momentum coverage is PT < 20 GeV/c. In this paper, Y-cms- and P-T-differential cross sections for inclusive J/psi production are presented, and the corresponding nuclear modification factors R-pPb are shown. Forward results show a suppression of the J/psi yield with respect to pp collisions, concentrated in the region P-T less than or similar to 5 GeV/c. At backward rapidity no significant suppression is observed. The results are compared to previous measurements by ALICE in p-Pb collisions at root s(NN) = 5.02 TeV and to theoretical calculations. Finally, the ratios R-FB between forward- and backward-Y-cms R-pPb values are shown and discussed.

KW - 114 Physical sciences

KW - Heavy Ion Experiments

KW - TRANSVERSE-MOMENTUM DEPENDENCE

KW - RANGE ANGULAR-CORRELATIONS

KW - PROTON-NUCLEUS COLLISIONS

KW - LONG-RANGE

KW - CHARMONIUM PRODUCTION

KW - PPB COLLISIONS

KW - SUPPRESSION

KW - LHC

KW - ENERGY

KW - COMOVERS

U2 - 10.1007/JHEP07(2018)160

DO - 10.1007/JHEP07(2018)160

M3 - Article

VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 7

M1 - 160

ER -