Abstract
The PHENIX experiment at RHIC has measured the invariant cross section for ω-meson production at midrapidity in the transverse momentum range GeV/ in and +Au collisions at GeV. Measurements in two decay channels ( and ) yield consistent results, and the reconstructed ω mass agrees with the accepted value within the range of the measurements. The ratio is found to be in and in +Au collisions, independent of . The nuclear modification factor is and in minimum bias and central (0–20%) +Au collisions, respectively.
- Received 18 November 2006
DOI:https://doi.org/10.1103/PhysRevC.75.051902
©2007 American Physical Society