Photon-Photon and Pomeron-Pomeron Processes in Peripheral Heavy Ion Collisions
Nuclear Theory
2009-11-06 v1 High Energy Physics - Phenomenology
Abstract
We estimate the cross sections for the production of resonances, pion pairs and a central cluster of hadrons in peripheral heavy-ion collisions through two-photon and double-pomeron exchange, at energies that will be available at RHIC and LHC. The effect of the impact parameter in the diffractive reactions is introduced, and imposing the condition for realistic peripheral collisions we verify that in the case of very heavy ions the pomeron-pomeron contribution is indeed smaller than the electromagnetic one. However, they give a non-negligible background in the collision of light ions. This diffractive background will be more important at RHIC than at LHC.
Keywords
Cite
@article{arxiv.nucl-th/0003038,
title = {Photon-Photon and Pomeron-Pomeron Processes in Peripheral Heavy Ion Collisions},
author = {C. G. Roldao and A. A. Natale},
journal= {arXiv preprint arXiv:nucl-th/0003038},
year = {2009}
}
Comments
22 pages, 1 Postscript figures, 4 tables, to appear in Phys. Rev. C