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Title: Longitudinal dynamics of high baryon density matter in high-energy heavy-ion collisions

Journal Article · · Physical Review C
 [1];  [2]
  1. Univ. of Minnesota, Minneapolis, MN (United States)
  2. Wayne State Univ., Detroit, MI (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
+ Show Author Affiliations

In high-energy heavy-ion collisions, the two colliding nuclei pass through each other leaving behind an almost baryon-free central rapidity region. Most of the baryons are carried away by the nuclear remnants and are located in the so-called fragmentation regions. In previous papers, it has been argued that very high baryon densities, more than ten times larger than the normal nuclear density, can be achieved in these fragmentation regions. In this paper, we assume the high baryon density matter is thermalized at the same time as the baryon-free quark-gluon plasma in the central rapidity region. We perform a 1+1D (temporal + longitudinal) hydrodynamic simulation covering both the fragmentation regions and the central rapidity region with the baryon diffusion equation included. Baryons are found to diffuse from the fragmentation regions to the central rapidity region driven by fugacity gradients. Here, the baryon chemical potential at freezeout monotonically increases from the central rapidity region to the fragmentation regions, suggesting a rapidity scan in high-energy heavy-ion collisions might be helpful in searching for the critical point of the quantum chromodynamics phase diagram.

Research Organization:
Univ. of Minnesota, Minneapolis, MN (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
FG02-87ER40328; SC0012704
OSTI ID:
1610096
Alternate ID(s):
OSTI ID: 1488888
Journal Information:
Physical Review C, Vol. 98, Issue 6; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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Relativistic second-order dissipative hydrodynamics at finite chemical potential journal December 2015
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Cited By (3)

Exploring the partonic phase at finite chemical potential within an extended off‐shell transport approach journal November 2019
Landau and Eckart frames for relativistic fluids in nuclear collisions journal July 2019
Landau and Eckart frames for relativistic fluids in nuclear collisions text January 2019

Figures / Tables (17)

FIG. 1(p. 5)figure FIG. 1
FIG. 2(p. 5)figure FIG. 2
FIG. 3(p. 8)figure FIG. 3
FIG. 4(p. 8)figure FIG. 4
FIG. 5(p. 8)figure FIG. 5
FIG. 6(p. 9)figure FIG. 6
FIG. 7(p. 9)figure FIG. 7
FIG. 8(p. 9)figure FIG. 8
FIG. 10(p. 10)figure FIG. 10
FIG. 9(p. 10)figure FIG. 9
FIG. 11(p. 11)figure FIG. 11
FIG. 12(p. 11)figure FIG. 12
FIG. 13(p. 11)figure FIG. 13
FIG. 14(p. 12)figure FIG. 14
FIG. 15(p. 12)figure FIG. 15
FIG. 16(p. 13)figure FIG. 16
FIG. 17(p. 13)figure FIG. 17

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Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
physics
hydrodynamic models
nuclear matter
particle &amp; resonance production
QCD phase transitions
relativistic heavy-ion collisions