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Title: Sequential Bottomonium Production at High Temperatures

We present that bottomonium production in heavy ion collisions is modified compared with any simple extrapolation from elementary collisions. This modification is most likely caused by the presence of a deconfined system of quarks and gluons for times of several fm/c. In such a medium, bottomonium can be destroyed, but the constituent bottom quarks will likely stay spatially correlated due to small mean free paths in this system. With these facts in mind, we describe bottomonium formation with a coupled set of equations. A rate equation describes the destruction of Υ(1S)Υ(1S) particles, while a Langevin equation describes how the bottom quarks stay correlated for a sufficiently long time so that recombination into bottomonia is possible. Lastly, we show that within this approach it is possible to understand the magnitude of Υ(1S)Υ(1S) suppression in heavy ion collisions and the larger suppression of the Υ(2S)Υ(2S) state, implying that the reduction in the ratio of Υ(1S)/Υ(2S)Υ(1S)/Υ(2S) yield in heavy ion collision does not necessarily correspond to the sequential melting picture.
Authors:
ORCiD logo [1] ;  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Department
  2. Michigan State Univ., East Lansing, MI (United States). Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory
Publication Date:
Report Number(s):
BNL-113925-2017-JA
Journal ID: ISSN 0177-7963; KB0301020
Grant/Contract Number:
SC0012704; FG02-03ER41259
Type:
Accepted Manuscript
Journal Name:
Few-Body Systems
Additional Journal Information:
Journal Volume: 58; Journal Issue: 2; Journal ID: ISSN 0177-7963
Publisher:
Springer
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1376099