Recent results on high pΤ particle production from the PHENIX experiment

Particles with large transverse momentum (P-T) produced during the initial phase of a nuclear collision can be used to probe the dense excited matter created during the collision process. The P-T spectra of neutral pions and charged hadrons in Au+Au and d + Au collisions GeV are compared to p + p spectra at the same roots(NN). In central Au+Au collisions a factor of 4-5 suppression of high p(T) neutral pion and charged hadron yields is observed compared to expectations from scaled p+p results. No suppression of high P-T particles is observed in d + Au collisions, suggesting that the observed suppression in central Au+Au collisions is due to the produced dense matter.