Latest results on production in heavy-ion collisions from the STAR experiment

Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions 2016

Vértesi, R.^1,2

Nuclear Physics Institute, Academy of Sciences of the Czech Republic, e 130, Husinec-e

25068, Czech Republic^1

Wigner Research Centre for Physics, Hungarian Academy of Sciences RMI, P.O.Box 49, Budapest 114

H-1525, Hungary^2

关键词: Antiquarks;    Au+Au collisions;    Heavy ion collision;    Measurements of;    Nuclear modification factors;    STAR experiment;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/832/1/012025/pdf
DOI  :  10.1088/1742-6596/832/1/012025

来源: IOP

【 摘 要 】

We report on the latest measurements of the production of ϒ mesons in heavy-ion collisions from the STAR experiment at RHIC. New measurements of the nuclear modification factors of the ϒ (1S+2S+3S) and ϒ (1S) states in U+U collisions at √ sNN = 193 GeV are presented as a function of the number of participants (Npart) in the collisions. In addition, the suppression of ϒ (1S) and ϒ (2S+2S) is presented versus the quark-antiquark binding energy. Preliminary results on ϒ suppression in Au+Au collisions at √ sNN = 200 GeV, reconstructed via the dimuon channel, are also reported.