Azimuthal anisotophy in U + U and Au + Au collisions at RHIC
Abstract
Collisions between prolate uranium nuclei are used to study how particle production and azimuthal anisotropies depend on initial geometry in heavy-ion collisions. We report the two- and four-particle cumulants, v2{2} and v2{4}, for charged hadrons from U+U collisions at sNN=193 GeV and Au+Au collisions at sNN=200 GeV. Nearly fully overlapping collisions are selected based on the energy deposited by spectators in zero degree calorimeters (ZDCs). Within this sample, the observed dependence of v2{2} on multiplicity demonstrates that ZDC information combined with multiplicity can preferentially select different overlap configurations in U+U collisions. We also show that v2 vs multiplicity can be better described by models, such as gluon saturation or quark participant models, that eliminate the dependence of the multiplicity on the number of binary nucleon-nucleon collisions.
- Authors:
-
- AGH Univ. of Science and Technology, Cracow (Poland). et al.
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1235886
- Alternate Identifier(s):
- OSTI ID: 1227039; OSTI ID: 1458474
- Report Number(s):
- BNL-111724-2016-JA
Journal ID: ISSN 0031-9007; PRLTAO; R&D Project: PO 004; KB0202012
- Grant/Contract Number:
- SC00112704; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 115; Journal Issue: 22; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Relativistic Heavy Ion Collider
Citation Formats
Adamczyk, L. Azimuthal anisotophy in U + U and Au + Au collisions at RHIC. United States: N. p., 2015.
Web. doi:10.1103/PhysRevLett.115.222301.
Adamczyk, L. Azimuthal anisotophy in U + U and Au + Au collisions at RHIC. United States. https://doi.org/10.1103/PhysRevLett.115.222301
Adamczyk, L. Tue .
"Azimuthal anisotophy in U + U and Au + Au collisions at RHIC". United States. https://doi.org/10.1103/PhysRevLett.115.222301. https://www.osti.gov/servlets/purl/1235886.
@article{osti_1235886,
title = {Azimuthal anisotophy in U + U and Au + Au collisions at RHIC},
author = {Adamczyk, L.},
abstractNote = {Collisions between prolate uranium nuclei are used to study how particle production and azimuthal anisotropies depend on initial geometry in heavy-ion collisions. We report the two- and four-particle cumulants, v2{2} and v2{4}, for charged hadrons from U+U collisions at sNN=193 GeV and Au+Au collisions at sNN=200 GeV. Nearly fully overlapping collisions are selected based on the energy deposited by spectators in zero degree calorimeters (ZDCs). Within this sample, the observed dependence of v2{2} on multiplicity demonstrates that ZDC information combined with multiplicity can preferentially select different overlap configurations in U+U collisions. We also show that v2 vs multiplicity can be better described by models, such as gluon saturation or quark participant models, that eliminate the dependence of the multiplicity on the number of binary nucleon-nucleon collisions.},
doi = {10.1103/PhysRevLett.115.222301},
journal = {Physical Review Letters},
number = 22,
volume = 115,
place = {United States},
year = {Tue Nov 24 00:00:00 EST 2015},
month = {Tue Nov 24 00:00:00 EST 2015}
}
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