Large t diffractive J/\psi photoproduction with proton dissociation in ultraperipheral pA collisions at LHC
Abstract
We evaluate the large momentum transfer photoproduction with rapidity gaps in ultraperipheral proton-ion collisions at the LHC which provides an effective method of probing dynamics of large t elastic hard QCD Pomeron interactions. It is shown that the experimental studies of this process would allow to investigate the energy dependence of cross section of elastic scattering of a small dipole off the gluon over a wide range of invariant energies 10^3 < s_{c\bar c - gluon} < 10^6 GeV^2. The accessible energy range exceeds the one reached in \gamma p at HERA by a factor of 10 and allows the kinematic cuts which improve greatly sensitivity to the Pomeron dynamics as compared to the HERA measurements. The cross section is expected to change by a factor \ge 20 throughout this interval and our estimates predict quite reasonable counting rates for this process with the several of the LHC detectors.
Keywords
Cite
@article{arxiv.0807.2208,
title = {Large t diffractive J/\psi photoproduction with proton dissociation in ultraperipheral pA collisions at LHC},
author = {Leonid Frankfurt and Mark Strikman and Michael Zhalov},
journal= {arXiv preprint arXiv:0807.2208},
year = {2008}
}
Comments
16 pages, 5 figures