Physics and Astronomy
Journal or Book Title
Physical Review C
The PHENIX Collaboration has measured phi meson production in d + Au collisions at root s(NN) = 200 GeV using the dimuon and dielectron decay channels. The phi meson is measured in the forward (backward) d-going (Au-going) direction, 1.2 < y < 2.2 (-2.2 < y < -1.2) in the transverse-momentum (pT) range from 1-7 GeV/c and at midrapidity vertical bar y vertical bar < 0.35 in the p(T) range below 7 GeV/c. The phi meson invariant yields and nuclear-modification factors as a function of p(T), rapidity, and centrality are reported. An enhancement of phi meson production is observed in the Au-going direction, while suppression is seen in the d-going direction, and no modification is observed at midrapidity relative to the yield in p + p collisions scaled by the number of binary collisions. Similar behavior was previously observed for inclusive charged hadrons and open heavy flavor, indicating similar cold-nuclear-matter effects.
American Physical Society
Adare, Andrew; Apadula, Nicole J.; Dion, Alan; Hill, John C.; Hotvedt, Nels J.; Kempel, Todd; Lajoie, John G.; Lebedev, Alexandre; Ogilvie, Craig; Patel, Milap R.; Pei, H.; Perry, Joshua; Rinn, Timothy T.; Rosati, Marzia; Shimomura, M.; Silva, C. L.; Timilsina, Arbin; Wei, Feng; et al.; and PHENIX Collaboration, "phi meson production in d plus Au collisions at root s(NN)=200 GeV" (2015). Physics and Astronomy Publications. 214.