Publication Type
Journal
Journal Name
Physical Review C
Publication Date
Page Number
044902
Volume
84
Abstract
The PHENIX experiment at the Relativistic Heavy Ion Collider has measured ω meson production via leptonic
and hadronic decay channels in p +p, d +Au, Cu+Cu, and Au+Au collisions at
√
sNN = 200 GeV. The
invariant transverse momentum spectra measured in different decay modes give consistent results.Measurements
in the hadronic decay channel in Cu+Cu and Au+Au collisions show that ω production has a suppression
pattern at high transverse momentum, similar to that of π0 and η in central collisions, but no suppression is
observed in peripheral collisions. The nuclear modification factors, RAA, are consistent in Cu+Cu and Au+Au
collisions at similar numbers of participant nucleons.
