Dielectron azimuthal anisotropy at mid-rapidity in Au + Au collisions at √s[subscript NN] = 200 GeV
Name
PhysRevC.90.064904.pdf
Size
1.48 MB
Format
Adobe PDF
Checksum (MD5)
978f924b5a12c6cebd56090192a78317
Author(s)
Adamczyk, L.
Adkins, J. K.
Agakishiev, G.
Aggarwal, M. M.
Ahammed, Z.
Alekseev, I.
Alford, J.
Anson, C. D.
Aparin, A.
Arkhipkin, D.
Date Issued
December 2014
Journal
Physical Review C
Publisher
American Physical Society
Citation
Adamczyk, L., et al. "Dielectron azimuthal anisotropy at mid-rapidity in Au + Au collisions at √s[subscript NN] = 200 GeV." Phys. Rev. C 90, 064904 (December 2014). © 2014 American Physical Society
Version
Final published version
Abstract
We report on the first measurement of the azimuthal anisotropy (v[subscript 2]) of dielectrons (e[superscript +]e[superscript −] pairs) at mid-rapidity from √s[subscript NN] = 200 GeV Au + Au collisions with the STAR detector at the Relativistic Heavy Ion Collider (RHIC), presented as a function of transverse momentum (p[subscript T]) for different invariant-mass regions. In the mass region M[subscript ee] < 1.1 GeV/c[superscript 2] the dielectron v[subscript 2] measurements are found to be consistent with expectations from π[superscript 0],η,ω, and ϕ decay contributions. In the mass region 1.1 < M[subscript ee] < 2.9 GeV/c[superscript 2], the measured dielectron v[subscript 2] is consistent, within experimental uncertainties, with that from the c[bar over c] contributions.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevC.90.064904
