Document Type

Article

Publication Version

Published Version

Publication Date

2009

Journal or Book Title

Physical Review C

Volume

79

Issue

5

First Page

055206-1

Last Page

055206-11

DOI

10.1103/PhysRevC.79.055206

Abstract

We study coherent and incoherent diffractive hadron production in high-energy quarkonium–heavy nucleus collisions as a probe of the gluon saturation regime of quantum chromodynamics. Taking this process as a model for pA collisions, we argue that the coherent diffractive gluon production, in which the target nucleus stays intact, exhibits a remarkable sensitivity to the energy, rapidity, and atomic number dependence. The incoherent diffractive gluon production is less sensitive to the details of the low-x dynamics but can serve as a probe of fluctuations in the color glass condensate. As a quantitative measure of the nuclear effects on diffractive hadron production we introduce a new observable—the diffractive nuclear modification factor. We discuss possible signatures of gluon saturation in diffractive gluon production at the Relativistic Heavy Ion Collider, the Large Hadron Collider, and Electron Ion Collider.

Comments

This article is from Physical Review C 79 (2009): 055206, doi: 10.1103/PhysRevC.79.055206. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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