Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

11-12-2013

Journal or Book Title

Physical Review Letters

Volume

111

Issue

20

First Page

202301

DOI

10.1103/PhysRevLett.111.202301

Abstract

We present results for three charmonia states (psi' chi(c), and J/ psi) in d + Au collisions at vertical bar y vertical bar < 0.35 and root s(NN) = 200 GeV. We find that the modification of the psi' yield relative to that of the J/ psi scales approximately with charged particle multiplicity at midrapidity across p + A, d + Au, and A + A results from the Super Proton Synchrotron and the Relativistic Heavy Ion Collider. In large-impact-parameter collisions we observe a similar suppression for the psi' and J/ psi, while in small-impact-parameter collisions the more weakly bound psi' is more strongly suppressed. Owing to the short time spent traversing the Au nucleus, the larger psi' suppression in central events is not explained by an increase of the nuclear absorption owing to meson formation time effects.

Comments

This is an article from Physical Review Letters 2013 (111): 202301-1, doi:10.1103/PhysRevLett.111.202301. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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