Photon-Photon and Pomeron-Pomeron Processes in Peripheral Heavy Ion Collisions

Details Photon-Photon and Pomeron-Pomeron Processes in Peripheral Heavy Ion Collisions Photon-Photon and Pomeron-Pomeron Processes in Peripheral Heavy Ion Collisions

2000-03-17

arxiv.org/abs/nucl-th/0003038v1

Phys.Rev. C61 (2000) 064907

Physics

Nuclear Physics

Nuclear Theory

22 pages, 1 Postscript figures, 4 tables, to appear in Phys. Rev. C

Scientific paper

10.1103/PhysRevC.61.064907

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.

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