Suppression of ψ(2S) production in p-Pb collisions at (Formula presneted.)

The ALICE collaboration

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Abstract: The ALICE Collaboration has studied the inclusive production of the charmonium state ψ(2S) in proton-lead (p-Pb) collisions at the nucleon-nucleon centre of mass energy (formula presented.) = 5.02 TeV at the CERN LHC. The measurement was performed at forward (2.03 <ycms<3.53) and backward (−4.46 <ycms<−2.96) centre of mass rapidities, studying the decays into muon pairs. In this paper, we present the inclusive production cross sections σψ(2S), both integrated and as a function of the transverse momentum pT, for the two ycms domains. The results are compared to those obtained for the 1S vector state (J/ψ), by showing the ratios between the production cross sections, as well as the double ratios [σψ(2S)J/ψ ]pPb/[σψ(2S)J/ψ]pp between p-Pb and proton-proton collisions. Finally, the nuclear modification factor for inclusive ψ(2S) is evaluated and compared to the measurement of the same quantity for J/ψ and to theoretical models including parton shadowing and coherent energy loss mechanisms. The results show a significantly larger suppression of the ψ(2S) compared to that measured for J/ψ and to models. These observations represent a clear indication for sizeable final state effects on ψ(2S) production.[Figure not available: see fulltext.

Original languageEnglish
Article number73
JournalJournal of High Energy Physics
Volume2014
Issue number12
DOIs
Publication statusPublished - 2014

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retarding
collisions
center of mass
protons
state vectors
cross sections
transverse momentum
partons
muons
indication
energy dissipation
decay
energy

Keywords

  • Charm physics
  • Heavy Ions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Suppression of ψ(2S) production in p-Pb collisions at (Formula presneted.). / The ALICE collaboration.

In: Journal of High Energy Physics, Vol. 2014, No. 12, 73, 2014.

Research output: Contribution to journalArticle

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title = "Suppression of ψ(2S) production in p-Pb collisions at (Formula presneted.)",
abstract = "Abstract: The ALICE Collaboration has studied the inclusive production of the charmonium state ψ(2S) in proton-lead (p-Pb) collisions at the nucleon-nucleon centre of mass energy (formula presented.) = 5.02 TeV at the CERN LHC. The measurement was performed at forward (2.03 cms<3.53) and backward (−4.46 cms<−2.96) centre of mass rapidities, studying the decays into muon pairs. In this paper, we present the inclusive production cross sections σψ(2S), both integrated and as a function of the transverse momentum pT, for the two ycms domains. The results are compared to those obtained for the 1S vector state (J/ψ), by showing the ratios between the production cross sections, as well as the double ratios [σψ(2S)/σJ/ψ ]pPb/[σψ(2S)/σJ/ψ]pp between p-Pb and proton-proton collisions. Finally, the nuclear modification factor for inclusive ψ(2S) is evaluated and compared to the measurement of the same quantity for J/ψ and to theoretical models including parton shadowing and coherent energy loss mechanisms. The results show a significantly larger suppression of the ψ(2S) compared to that measured for J/ψ and to models. These observations represent a clear indication for sizeable final state effects on ψ(2S) production.[Figure not available: see fulltext.",
keywords = "Charm physics, Heavy Ions",
author = "{The ALICE collaboration} and B. Abelev and J. Adam and D. Adamov{\'a} and Aggarwal, {M. M.} and M. Agnello and A. Agostinelli and N. Agrawal and Z. Ahammed and N. Ahmad and I. Ahmed and Ahn, {S. U.} and Ahn, {S. A.} and I. Aimo and S. Aiola and M. Ajaz and A. Akindinov and Alam, {S. N.} and D. Aleksandrov and B. Alessandro and D. Alexandre and A. Alici and A. Alkin and J. Alme and T. Alt and S. Altinpinar and I. Altsybeev and {Alves Garcia Prado}, C. and C. Andrei and A. Andronic and V. Anguelov and J. Anielski and T. Antičić and F. Antinori and P. Antonioli and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and N. Armesto and R. Arnaldi and T. Aronsson and Arsene, {I. C.} and G. Barnaf{\"o}ldi and G. Benc{\'e}di and D. Ber{\'e}nyi and L. Boldizs{\'a}r and E. D{\'e}nes and G. Hamar and G. Kiss and P. L{\'e}vai and S. Pochybov{\'a}",
year = "2014",
doi = "10.1007/JHEP12(2014)073",
language = "English",
volume = "2014",
journal = "Journal of High Energy Physics",
issn = "1126-6708",
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number = "12",

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T1 - Suppression of ψ(2S) production in p-Pb collisions at (Formula presneted.)

AU - The ALICE collaboration

AU - Abelev, B.

AU - Adam, J.

AU - Adamová, D.

AU - Aggarwal, M. M.

AU - Agnello, M.

AU - Agostinelli, A.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, N.

AU - Ahmed, I.

AU - Ahn, S. U.

AU - Ahn, S. A.

AU - Aimo, I.

AU - Aiola, S.

AU - Ajaz, M.

AU - Akindinov, A.

AU - Alam, S. N.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alexandre, D.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altinpinar, S.

AU - Altsybeev, I.

AU - Alves Garcia Prado, C.

AU - Andrei, C.

AU - Andronic, A.

AU - Anguelov, V.

AU - Anielski, J.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Armesto, N.

AU - Arnaldi, R.

AU - Aronsson, T.

AU - Arsene, I. C.

AU - Barnaföldi, G.

AU - Bencédi, G.

AU - Berényi, D.

AU - Boldizsár, L.

AU - Dénes, E.

AU - Hamar, G.

AU - Kiss, G.

AU - Lévai, P.

AU - Pochybová, S.

PY - 2014

Y1 - 2014

N2 - Abstract: The ALICE Collaboration has studied the inclusive production of the charmonium state ψ(2S) in proton-lead (p-Pb) collisions at the nucleon-nucleon centre of mass energy (formula presented.) = 5.02 TeV at the CERN LHC. The measurement was performed at forward (2.03 cms<3.53) and backward (−4.46 cms<−2.96) centre of mass rapidities, studying the decays into muon pairs. In this paper, we present the inclusive production cross sections σψ(2S), both integrated and as a function of the transverse momentum pT, for the two ycms domains. The results are compared to those obtained for the 1S vector state (J/ψ), by showing the ratios between the production cross sections, as well as the double ratios [σψ(2S)/σJ/ψ ]pPb/[σψ(2S)/σJ/ψ]pp between p-Pb and proton-proton collisions. Finally, the nuclear modification factor for inclusive ψ(2S) is evaluated and compared to the measurement of the same quantity for J/ψ and to theoretical models including parton shadowing and coherent energy loss mechanisms. The results show a significantly larger suppression of the ψ(2S) compared to that measured for J/ψ and to models. These observations represent a clear indication for sizeable final state effects on ψ(2S) production.[Figure not available: see fulltext.

AB - Abstract: The ALICE Collaboration has studied the inclusive production of the charmonium state ψ(2S) in proton-lead (p-Pb) collisions at the nucleon-nucleon centre of mass energy (formula presented.) = 5.02 TeV at the CERN LHC. The measurement was performed at forward (2.03 cms<3.53) and backward (−4.46 cms<−2.96) centre of mass rapidities, studying the decays into muon pairs. In this paper, we present the inclusive production cross sections σψ(2S), both integrated and as a function of the transverse momentum pT, for the two ycms domains. The results are compared to those obtained for the 1S vector state (J/ψ), by showing the ratios between the production cross sections, as well as the double ratios [σψ(2S)/σJ/ψ ]pPb/[σψ(2S)/σJ/ψ]pp between p-Pb and proton-proton collisions. Finally, the nuclear modification factor for inclusive ψ(2S) is evaluated and compared to the measurement of the same quantity for J/ψ and to theoretical models including parton shadowing and coherent energy loss mechanisms. The results show a significantly larger suppression of the ψ(2S) compared to that measured for J/ψ and to models. These observations represent a clear indication for sizeable final state effects on ψ(2S) production.[Figure not available: see fulltext.

KW - Charm physics

KW - Heavy Ions

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U2 - 10.1007/JHEP12(2014)073

DO - 10.1007/JHEP12(2014)073

M3 - Article

VL - 2014

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

IS - 12

M1 - 73

ER -