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Prehydrodynamic evolution and its impact on quark-gluon plasma signatures

Journal Article · · Physical Review. C
 [1];  [2];  [3];  [2]
  1. The Ohio State University, Columbus, OH (United States); OSTI
  2. The Ohio State University, Columbus, OH (United States)
  3. The Ohio State University, Columbus, OH (United States); North Carolina State University, Raleigh, NC (United States)
+ Show Author Affiliations
State-of-the-art hydrodynamic models of heavy-ion collisions have considerable theoretical model uncertainties in the description of the very early prehydrodynamic stage. Here we add a new computational module, KTIso, that describes the prehydrodynamic evolution kinetically, based on the relativistic Boltzmann equation with collisions treated in the isotropization time approximation. As a novelty, KT Iso allows for the inclusion and evolution of initial-state momentum anisotropies. To maintain computational efficiency KTIso assumes strict longitudinal boost invariance and allows collisions to isotropize only the transverse momenta. We use it to explore the sensitivity of hadronic observables measured in relativistic heavy-ion collisions to initial-state momentum anisotropies and microscopic scattering during the prehydrodynamic stage.
Research Organization:
North Carolina State University, Raleigh, NC (United States); The Ohio State University, Columbus, OH (United States)
Sponsoring Organization:
Alexander von Humboldt Foundation; National Science Foundation (NSF); USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
FG02-03ER41260; SC0004286
OSTI ID:
1979886
Journal Information:
Physical Review. C, Journal Name: Physical Review. C Journal Issue: 6 Vol. 105; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
collective flow
quark-gluon plasma
relativistic heavy-ion collisions