TY - JOUR
T1 - Direct virtual photon production in Au+Au collisions at sNN=200 GeV
AU - Adamczyk, L.
AU - Adkins, J. K.
AU - Agakishiev, G.
AU - Aggarwal, M. M.
AU - Ahammed, Z.
AU - Ajitanand, N. N.
AU - Alekseev, I.
AU - Anderson, D. M.
AU - Aoyama, R.
AU - Aparin, A.
AU - Arkhipkin, D.
AU - Aschenauer, E. C.
AU - Ashraf, M. U.
AU - Attri, A.
AU - Averichev, G. S.
AU - Bai, X.
AU - Bairathi, V.
AU - Behera, A.
AU - Bellwied, R.
AU - Bhasin, A.
AU - Bhati, A. K.
AU - Bhattarai, P.
AU - Bielcik, J.
AU - Bielcikova, J.
AU - Bland, L. C.
AU - Bordyuzhin, I. G.
AU - Bouchet, J.
AU - Brandenburg, J. D.
AU - Brandin, A. V.
AU - Brown, D.
AU - Bunzarov, I.
AU - Butterworth, J.
AU - Caines, H.
AU - Calderón de la Barca Sánchez, M.
AU - Campbell, J. M.
AU - Cebra, D.
AU - Chakaberia, I.
AU - Chaloupka, P.
AU - Chang, Z.
AU - Chankova-Bunzarova, N.
AU - Chatterjee, A.
AU - Chattopadhyay, S.
AU - Chen, X.
AU - Chen, X.
AU - Chen, J. H.
AU - Cheng, J.
AU - Cherney, M.
AU - Christie, W.
AU - Contin, G.
AU - Fatemi, R.
N1 - Publisher Copyright:
© 2017 The Author
PY - 2017/7/10
Y1 - 2017/7/10
N2 - We report the direct virtual photon invariant yields in the transverse momentum ranges 1T<3 GeV/c and 5T<10 GeV/c at mid-rapidity derived from the dielectron invariant mass continuum region 0.10ee<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 1T<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.
AB - We report the direct virtual photon invariant yields in the transverse momentum ranges 1T<3 GeV/c and 5T<10 GeV/c at mid-rapidity derived from the dielectron invariant mass continuum region 0.10ee<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 1T<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.
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U2 - 10.1016/j.physletb.2017.04.050
DO - 10.1016/j.physletb.2017.04.050
M3 - Article
AN - SCOPUS:85019187716
SN - 0370-2693
VL - 770
SP - 451
EP - 458
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -