Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

12-6-2012

Journal or Book Title

Physical Review C

Volume

86

First Page

064901-1

Last Page

064901-10

DOI

10.1103/PhysRevC.86.064901

Abstract

We present measurements of the J/ψ invariant yields in √sNN=39 and 62.4 GeV Au + Au collisions at forward rapidity (1.2<|y|<2.2). Invariant yields are presented as a function of both collision centrality and transverse momentum. Nuclear modifications are obtained for central relative to peripheral Au + Au collisions (RCP) and for various centrality selections in Au + Au relative to scaled p + p cross sections obtained from other measurements (RAA). The observed suppression patterns at 39 and 62.4 GeV are quite similar to those previously measured at 200 GeV. This similar suppression presents a challenge to theoretical models that contain various competing mechanisms with different energy dependencies, some of which cause suppression and others enhancement.

Comments

This is an article from Physical Review C 86 (2012): 064901-1, doi:10.1103/PhysRevC.86.064901. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

Included in

Nuclear Commons

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