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Azimuthal Anisotropy in U+U and Au+Au Collisions at RHIC (CROSBI ID 226418)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

(STAR Collaboration) Adamczyk, L. ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Zyzak, M. Azimuthal Anisotropy in U+U and Au+Au Collisions at RHIC // Physical review letters, 115 (2015), 22; 222301, 7. doi: 10.1103/PhysRevLett.115.222301

Podaci o odgovornosti

Adamczyk, L. ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Zyzak, M.

STAR Collaboration

engleski

Azimuthal Anisotropy in U+U and Au+Au Collisions at RHIC

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.

STAR ; anisotropy

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Podaci o izdanju

115 (22)

2015.

222301

7

objavljeno

0031-9007

1079-7114

10.1103/PhysRevLett.115.222301

Povezanost rada

Fizika

Poveznice
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