Abstract
We report the direct virtual photon invariant yields in the transverse momentum ranges 1<pT<3 GeV/c and 5<pT<10 GeV/c at mid-rapidity derived from the dielectron invariant mass continuum region 0.10<Mee<0.28 GeV/c2 for 0–80% minimum-bias Au+Au collisions at sNN=200 GeV. A clear excess in the invariant yield compared to the nuclear overlap function TAA scaled p+p reference is observed in the pT range 1<pT<3 GeV/c. For pT>6 GeV/c the production follows TAA scaling. Model calculations with contributions from thermal radiation and initial hard parton scattering are consistent within uncertainties with the direct virtual photon invariant yield.
Highlights
AgakishievRight click to open a feedback form in a new tab to let us know how this document benefits you
Photon production provides a unique observable to study the fundamental properties of the hot and dense medium created in ultra-relativistic heavy-ion collisions
We report measurements of the dielectron continuum and derive the direct virtual photon invariant yields for 1 < pT < 3 GeV/c and 5 < pT < 10 GeV/c
Summary
Right click to open a feedback form in a new tab to let us know how this document benefits you. Follow this and additional works at: https://uknowledge.uky.edu/physastron_facpub Part of the Astrophysics and Astronomy Commons, and the Physics Commons. V.; Brown, D.; Fatemi, Renee H.; and Ramachandran, Suvarna, "Direct Virtual Photon Production in Au+Au Collisions at √sNN = 200 GeV" (2017). This article is available at UKnowledge: https://uknowledge.uky.edu/physastron_facpub/504. We report the direct virtual photon invariant yields in the transverse momentum ranges 1 < pT
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