Energy Dependence of Acceptance-Corrected Dielectron Excess Mass Spectrum at Mid-Rapidity in Au + Au Collisions at √sNN = 19.6 and 200 GeV
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Author(s)
STAR Collaboration
van Nieuwenhuizen, Gerrit J
Date Issued
August 2015
Journal
Physics Letters B
Publisher
Elsevier
Citation
Adamczyk, L. et al. “Energy Dependence of Acceptance-Corrected Dielectron Excess Mass Spectrum at Mid-Rapidity in Au + Au Collisions at
√sNN = 19.6 and 200 GeV.” Physics Letters B 750 (November 2015): 64–71 © 2015 The Authors
Version
Final published version
Abstract
The acceptance-corrected dielectron excess mass spectra, where the known hadronic sources have been subtracted from the inclusive dielectron mass spectra, are reported for the first time at mid-rapidity |yee|<1 in minimum-bias Au+Au collisions at √sNN=19.6 and 200 GeV. The excess mass spectra are consistently described by a model calculation with a broadened ρ spectral function for Mee<1.1 GeV/c2. The integrated dielectron excess yield at √sNN=19.6 GeV for 0.4
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1016/j.physletb.2015.08.044
