Abstract
We present the first measurements of the , and resonances in collisions at GeV, reconstructed via their hadronic decay channels using the STAR detector (the solenoidal tracker at the BNL Relativistic Heavy Ion Collider). The masses and widths of these resonances are studied as a function of transverse momentum . We observe that the resonance spectra follow a generalized scaling law with the transverse mass . The of resonances in minimum bias collisions are compared with the of , and . The , and ratios in collisions are compared with the measurements in minimum bias interactions, where we observe that both measurements are comparable. The nuclear modification factors () of the , and scale with the number of binary collisions () for 1.2 GeV/.
30 More- Received 2 January 2008
DOI:https://doi.org/10.1103/PhysRevC.78.044906
©2008 American Physical Society