Y.Miake, Univ. of Tsukuba
10
Disappearance of
back-to-back corr.
pedestal and flow subtracted
lDirect evidence of loss of ‘jet’
lAzimuthal correlation w.r.t. high pt leading particle (trigger).
l pp ; clean di-jet
l dAu; similar to pp
lAu+Au; Similar on the same side (suggesting jet-like mechanism), but b-to-b disappeared
lEffect is not in initial but in final stage
lEnergy loss of partons in dense matter created in Au+Au
From distribution of near side, it is like ‘Jet’