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Title: Measurement of elliptic flow of light nuclei at s N N = 200 , 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV at the BNL Relativistic Heavy Ion Collider

Journal Article · · Physical Review C
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We present measurements of second-order azimuthal anisotropy (v2) at midrapidity (|y| < 1.0) for light nuclei d,t,3He (for s NN =200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV) and antinuclei $$ \overline{d}\ $$; (sNN=200, 62.4, 39, 27, and 19.6 GeV) and 3H$$ \overline{e}\ $$( s NN =200 GeV) in the STAR (Solenoidal Tracker at RHIC) experiment. The v2 for these light nuclei produced in heavy-ion collisions is compared with those for p and $$ \overline{p}\ $$. We observe mass ordering in nuclei v2(pT) at low transverse momenta (pT < 2.0 GeV/c). We also find a centrality dependence of v2 for d and $$ \overline{d}\ $$. The magnitude of v2 for t and 3He agree within statistical errors. Light-nuclei v2 are compared with predictions from a blast-wave model. Atomic mass number (A) scaling of light-nuclei v2(pT) seems to hold for pT/A < 1.5GeV/c. Results on light-nuclei v2 from a transport-plus-coalescence model are consistent with the experimental measurements.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
STAR Collaboration
Grant/Contract Number:
SC0012704; AC02-05CH11231
OSTI ID:
1340398
Alternate ID(s):
OSTI ID: 1326251; OSTI ID: 1423607
Report Number(s):
BNL-112716-2016-JA; PRVCAN; R&D Project: PO 004; KB0202012; TRN: US1701613
Journal Information:
Physical Review C, Vol. 94, Issue 3; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

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