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Title: Dielectron Azimuthal Anisotropy at mid-rapidity in Au+Au collisions at root s=200GeV

We report on the first measurement of the azimuthal anisotropy (v₂) of dielectrons (e⁺e⁻ pairs) at mid-rapidity from √(sNN)=200 GeV Au + Au collisions with the STAR detector at the Relativistic Heavy Ion Collider (RHIC), presented as a function of transverse momentum (pT) for different invariant-mass regions. In the mass region Mee<1.1 GeV/c² the dielectron v₂ measurements are found to be consistent with expectations from π⁰,η,ω, and Φ decay contributions. In the mass region 1.1ee<2.9GeV/c², the measured dielectron v₂ is consistent, within experimental uncertainties, with that from the cc¯ contributions.
Authors:
 [1]
  1. AGH University of Science and Technology, Cracow (Poland). et al.
Publication Date:
OSTI Identifier:
1172087
Report Number(s):
BNL--107407-2015-JA
Journal ID: ISSN 0556-2813; PRVCAN; R&D Project: PO 004; KB0202012
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 90; Journal Issue: 064904; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Contributing Orgs:
STAR Collaboration
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS