Measurement of jet-medium interactions via direct photon-hadron correlations in Au+Au and d+Au collisions at sqrt(s)_NN=200 GeV (CROSBI ID 287503)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Acharya, U.A. ; ... ; Makek, Mihael ; ... ; Zou, L.
PHENIX Collaboration
engleski
Measurement of jet-medium interactions via direct photon-hadron correlations in Au+Au and d+Au collisions at sqrt(s)_NN=200 GeV
We present direct photon-hadron correlations in 200 GeV/A Au+Au, d+Au and p+p collisions, for direct photon pT from 5--12 GeV/c, collected by the PHENIX Collaboration in the years from 2006 to 2011. We observe no significant modification of jet fragmentation in d+Au collisions, indicating that cold nuclear matter effects are small or absent. Hadrons carrying a large fraction of the quark's momentum are suppressed in Au+Au compared to p+p and d+Au. As the momentum fraction decreases, the yield of hadrons in Au+Au increases to an excess over the yield in p+p collisions. The excess is at large angles and at low hadron pT and is most pronounced for hadrons associated with lower momentum direct photons. Comparison to theoretical calculations suggests that the hadron excess arises from medium response to energy deposited by jets.
jets, photon-hadron, correlations, Au+Au, d+Au, 200 GeV, PHENIX, RHIC
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
102 (5)
2020.
054910
11
objavljeno
2469-9985
2469-9993
10.1103/physrevc.102.054910