Hefei workshop, 18-19/Oct/2004
ShinIchi Esumi, Univ. of Tsukuba
21
vertical bar : stat. error
curves, gray box : sys. error
phenix preliminary
Note :
Inclusive photon = including all of the decay effect
from hadrons
phenix preliminary
phenix preliminary
pT [GeV/c]
, 200 GeV Au+Au
, 200 GeV Au+Au
, 200 GeV Au+Au
Direct photons should not have any flow by
definition, but …
Alternatively g/p0 ratio can be measured by assuming v2g=0.
The difference here and the g/p0 ratio will give us a measure of direct g v2.