Nuclear Matter Effects on J/[psi] Production in Asymmetric Cu + Au Collisions at \(\sqrt{s_{\mathrm{NN}}}
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2014 |
ISBN-10 | : OCLC:940485829 |
ISBN-13 | : |
Rating | : 4/5 ( Downloads) |
Download or read book Nuclear Matter Effects on J/[psi] Production in Asymmetric Cu + Au Collisions at \(\sqrt{s_{\mathrm{NN}}} written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on J/[psi] production from asymmetric Cu+Au heavy-ion collisions at \(\sqrt{s_{\mathrm{NN}}} = 200\) GeV at the Relativistic Heavy Ion Collider at both forward (Cu-going direction) and backward (Au-going direction) rapidities. The nuclear modification of J/[psi] yields in Cu+Au collisions in the Au-going direction is found to be comparable to that in Au+Au collisions when plotted as a function of the number of participating nucleons. In the Cu-going direction, J/[psi] production shows a stronger suppression. This difference is comparable in magnitude and has the same sign as the difference expected from shadowing effects due to stronger low-x gluon suppression in the larger Au nucleus. Thus, the relative suppression is opposite to that expected from hot nuclear matter dissociation, since a higher energy density is expected in the Au-going direction.