Abstract
We report inclusive photon measurements about midrapidity from collisions at at RHIC. Photon pair conversions were reconstructed from electron and positron tracks measured with the Time Projection Chamber (TPC) of the STAR experiment. With this method, an energy resolution of at has been achieved. Reconstructed photons have also been used to measure the transverse momentum spectra of mesons about midrapidity via the decay channel. The fractional contribution of the decay to the inclusive photon spectrum decreases by between and in the most central events, indicating that relative to decay the contribution of other photon sources is substantially increasing.
7 More- Received 17 December 2003
DOI:https://doi.org/10.1103/PhysRevC.70.044902
©2004 American Physical Society