φ meson production in <i>d</i> plus Au collisions at √<i>s<sub>NN</sub></i>=200 GeV


Adare A., Aidala C., Ajitanand N. N., Akiba Y., Al-Bataineh H., Alexander J., ...More

PHYSICAL REVIEW C, vol.92, no.4, 2015 (SCI-Expanded, Scopus)

  • Publication Type: Article / Article
  • Volume: 92 Issue: 4
  • Publication Date: 2015
  • Doi Number: 10.1103/physrevc.92.044909
  • Journal Name: PHYSICAL REVIEW C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Yıldız Technical University Affiliated: No

Abstract

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.