0433671 - ÚJF 2015 RIV US eng J - Journal Article
Adamczyk, L. - Adkins, J. K. - Agakishiev, G. - Aggarwal, M. M. - Ahammed, Z. - Alekseev, I. - Alford, J. - Anson, C. - Aparin, A. A. - Arkhipkin, D. - Aschenauer, E. - Bielčík, J. - Bielčíková, Jana - Chaloupka, P. - Rusňák, Jan - Rusňáková, O. - Šumbera, Michal - Tlustý, David - Trzeciak, B. A. - Vértési, Robert … Total 350 authors
J/psi production at low p(T) in Au plus Au and Cu plus Cu collisions at root s(NN)=200 GeV with the STAR detector.
Physical Review C. Roč. 90, č. 2 (2014), 024906. ISSN 0556-2813. E-ISSN 2469-9993
R&D Projects: GA ČR GA13-20841S
Institutional support: RVO:61389005
Keywords : STAR * heavy ion collisions * quark gluon plasma
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 3.733, year: 2014 ; AIS: 0.843, rok: 2014
DOI: https://doi.org/10.1103/PhysRevC.90.024906

he J/psi p(T) spectrum and nuclear modification factor (R-AA) are reported for p(T) < 5 GeV/c and vertical bar y vertical bar < 1 from 0% to 60% central Au + Au and Cu + Cu collisions at root s(NN) = 200 GeV at STAR. A significant suppression of p(T) - integrated J/psi production is observed in central Au + Au events. The Cu + Cu data are consistent with no suppression, although the precision is limited by the available statistics. R-AA in Au + Au collisions exhibits a strong suppression at low transverse momentum and gradually increases with p(T). The data are compared to high-p(T) STAR results and previously published BNL Relativistic Heavy Ion Collider results. Comparing with model calculations, it is found that the invariant yields at low p(T) are significantly above hydrodynamic flow predictions but are consistent with models that include color screening and regeneration.
Permanent Link: http://hdl.handle.net/11104/0237892