Coherent and incoherent diffractive hadron production in pA collisions and gluon saturation
arXiv:0812.1519 · 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 QCD. Taking this process as a model for pA collisions, we argue that the coherent diffractive gluon production, in which the target nucleus states 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 RHIC, LHC and EIC.
22 pages, 6 figures; v2: a few typos corrected
References in corpus (7)
- Nuclear enhancement and suppression of diffractive structure functions at high energies
- A unified description of diffractive deep inelastic scattering with saturation
- Forward hadron production in high energy pA collisions: from RHIC to LHC
- Spectrum of diffractively produced gluons in onium-nucleus collisions
- Probing the low-x structure of nuclear matter with diffractive hadron production in pA collisions
- Gluon multiplicity in coherent diffraction of onium on a heavy nucleus
- Electromagnetic and strong contributions to dAu soft coherent inelastic diffraction at RHIC