Particle production at very low and intermediate transverse momenta in d+Au and Au+Au collisions

The transverse momentum (pT) spectra of identified charged particles have been measured at very low and intermediate transverse momenta in Au+Au collisions at and d+Au collisions at using the PHOBOS detector at RHIC. New results on charged particle production at very low pT in central Au+Au collisions at in the centrality intervals 0-6% and 6-15% are presented. A comparison of the PHOBOS low-pT data with predictions of a recent optical model is shown. The shapes of mT spectra for d+Au and Au+Au collisions are compared.