Abstract
The PHENIX experiment at the Relativistic Heavy Ion Collider has measured meson production and its nuclear modification in asymmetric heavy-ion collisions at GeV at both forward Cu-going direction and backward Au-going direction rapidities. The measurements are performed via the dimuon decay channel and reported as a function of the number of participating nucleons, rapidity, and transverse momentum. In the most central events, 0%–20% centrality, the meson yield integrated over GeV/ prefers a smaller value, which means a larger nuclear modification, in the Cu-going direction compared to the Au-going direction. Additionally, the nuclear-modification factor in collisions averaged over all centrality is measured to be similar to the previous PHENIX result in collisions for these rapidities.
4 More- Received 5 October 2015
DOI:https://doi.org/10.1103/PhysRevC.93.024904
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