Direct virtual photon production in Au+Au collisions at sNN=200 GeV

STAR Collaboration

研究成果: Article同行評審

34 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)451-458
頁數8
期刊Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
770
DOIs
出版狀態Published - 2017 7月 10

All Science Journal Classification (ASJC) codes

  • 核能與高能物理

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