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Title: Υ production in U + U collisions at s N N = 193 GeV measured with the STAR experiment

We present a measurement of the inclusive production of ¡ mesons in U+U collisions at √sNN = 193 GeV at mid-rapidity (|y| < 1). Previous studies in central Au+Au collisions at √sNN = 200 GeV show a suppression of ¡(1S+2S+3S) production relative to expectations from the ¡ yield in p+p collisions scaled by the number of binary nucleon-nucleon collisions (N coll), with an indication that the ¡(1S) state is also suppressed. The present measurement extends the number of participant nucleons in the collision (N part) by 20% compared to Au+Au collisions, and allows us to study a system with higher energy density. We observe a suppression in both the ¡(1S+2S+3S) and ¡(1S) yields in central U+U data, which consolidates and extends the previously observed suppression trend in Au+Au collisions.
  1. AGH - Univ. of Science and Technology, Krakow (Poland); et al.
Publication Date:
Report Number(s):
Journal ID: ISSN 2469-9985; PRVCAN; R&D Project: PO 004; KB0202012; TRN: US1701139
Grant/Contract Number:
SC0012704; AC02-05CH11231
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 94; Journal Issue: 6; Journal ID: ISSN 2469-9985
American Physical Society (APS)
Research Org:
Brookhaven National Lab. (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Contributing Orgs:
STAR Collaboration
Country of Publication:
United States
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Brookhaven RHIC Coll, quarkonium: heavy, quarkonium: production, quark gluon: plasma
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1336866; OSTI ID: 1423610