Latest results on ${\rm Y}$ production in heavy-ion collisions from the STAR experiment

Abstract

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

Accepted in Journal of Physics: Conference Series (JPCS). Will appear in the proceedings of Hot Quarks 2016 conference

References in corpus (6)

• Observation of sequential Upsilon suppression in PbPb collisions
• Color Screening Melts Quarkonium
• Suppression of Upsilon Production in d+Au and Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Upsilon Production as a Probe for Early State Dynamics in High Energy Nuclear Collisions at RHIC
• Measurement of ${\rm Y}$(1S+2S+3S) production in $p$$+$$p$ and Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Production of Quarkonia at RHIC