Abstract
One observes strong suppression effects for hard probes, e.g. the production of J/ψ or high-p T particles, in nucleus–nucleus (AA) collisions at RHIC. Surprisingly, the magnitude of the suppression is quite similar to that at SPS. In order to establish whether these features arise due to the presence of a thermalized system of quarks and gluons formed in the course of the collision, one should investigate the impact of suppression mechanisms which do not explicitly involve such a state. We calculate shadowing for gluons in the Glauber–Gribov theory and propose a model invoking a rapidity-dependent absorptive mechanism motivated by energy-momentum conservation effects. Furthermore, final-state suppression due to interaction with comoving matter (hadronic or pre-hadronic) has been shown to describe the data at SPS. We extend this model by including the backward reaction channel, i.e. recombination of open charm, which is estimated directly from pp data at RHIC. Strong suppression of charmonium both in pA and AA collisions at LHC is predicted. This is in stark contrast with the predictions of models assuming QGP formation and thermalization of heavy quarks.
Similar content being viewed by others
References
A. Adare (PHENIX Collaboration), Phys. Rev. Lett. 98, 232301 (2007)
B. Alessandro (NA50 Collaboration), Eur. Phys. J. C 39, 335 (2005)
L. Ramello (NA50 Collaboration), Nucl. Phys. A 715, 243c (2003)
P. Cortese (for the NA60 Collaboration), these proceedings
H. Wöhri, these proceedings
M. Bedjidian et al., arXiv:hep-ph/0311048
S.S. Adler (PHENIX Collaboration), Phys. Rev. Lett. 96, 012304 (2006)
A. Adare (PHENIX Collaboration), Phys. Rev. C 77, 024912 (2008)
D.M. Alde , Phys. Rev. Lett. 66, 133 (1991)
M.J. Leitch (FNAL E866/NuSea Collaboration), Phys. Rev. Lett. 84, 3256 (2000)
K. Boreskov, A. Capella, A. Kaidalov, J. Tran Thanh Van, Phys. Rev. D 47, 919 (1993)
M.A. Braun, C. Pajares, C.A. Salgado, N. Armesto, A. Capella, Nucl. Phys. B 509, 357 (1998)
V.N. Gribov, Sov. Phys. JETP 29, 483 (1969)
V.N. Gribov, Sov. Phys. JETP 30, 709 (1970)
V.N. Gribov, Sov. Phys. JETP 26, 414 (1968)
A. Capella, E.G. Ferreiro, Phys. Rev. C 76, 064906 (2007)
A. Capella, A. Kaidalov, Nucl. Phys. B 111, 477 (1976)
I.C. Arsene, L. Bravina, A.B. Kaidalov, K. Tywoniuk, E. Zabrodin, Phys. Lett. B 660, 176 (2008)
K. Tywoniuk, I. Arsene, L. Bravina, A. Kaidalov, E. Zabrodin, Phys. Lett. B 657, 170 (2007)
A. Capella, A. Kaidalov, A. Kouider Akil, C. Gerschel, Phys. Lett. B 393, 431 (1997)
N. Armesto, A. Capella, E.G. Ferreiro, Phys. Rev. C 59, 395 (1999)
A. Capella, E.G. Ferreiro, A.B. Kaidalov, Phys. Rev. Lett. 85, 2080 (2000)
A. Capella, D. Sousa, nucl-th/0303055
A. Capella, E.G. Ferreiro, Eur. Phys. J. C 42, 419 (2005)
R.L. Thews, M. Schroedter, J. Rafelski, Phys. Rev. C 63, 054905 (2001)
L. Grandchamp, R. Rapp, G.E. Brown, Phys. Rev. Lett. 92, 212301 (2004)
X. Zhao, R. Rapp, Phys. Lett. B 664, 253 (2008)
P. Braun-Munzinger, J. Stachel, Phys. Lett. B 490, 196 (2000)
M.I. Gorenstein, A.P. Kostyuk, H. Stöcker, W. Greiner, Phys. Lett. B 509, 277 (2001)
O. Linnyk, E.L. Bratkovskaya, W. Cassing, Nucl. Phys. A 807, 79 (2008)
A. Capella, L. Bravina, E.G. Ferreiro, A.B. Kaidalov, K. Tywoniuk, E. Zabrodin, arXiv:0712.4331 [hep-ph]
A. Andronic, P. Braun-Munzinger, K. Redlich, J. Stachel, Phys. Lett. B 659, 149 (2008)
H. van Hees, M. Mannarelli, V. Greco, R. Rapp, Phys. Rev. Lett. 100, 192301 (2008)
F. Karsch, H. Satz, Z. Phys. C 51, 209 (1991)
J.F. Gunion, R. Vogt, Nucl. Phys. B 492, 301 (1997)
L. Grandchamp, S. Lumpkins, D. Sun, H. van Hees, R. Rapp, Phys. Rev. C 73, 064906 (2006)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Bravina, L., Capella, A., Ferreiro, E.G. et al. Can the RHIC J/ψ puzzle(s) be settled at LHC?. Eur. Phys. J. C 61, 865–870 (2009). https://doi.org/10.1140/epjc/s10052-009-0906-5
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1140/epjc/s10052-009-0906-5