0433671 - ÚJF 2015 RIV US eng J - Článek v odborném periodiku
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 … celkem 350 autorů
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
Grant CEP: GA ČR GA13-20841S
Institucionální podpora: RVO:61389005
Klíčová slova: STAR * heavy ion collisions * quark gluon plasma
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 3.733, rok: 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.
Trvalý link: http://hdl.handle.net/11104/0237892