Two- and Three-photon Fusion in Relativistic Heavy ion Collisions

Details Two- and Three-photon Fusion in Relativistic Heavy ion Collisions Two- and Three-photon Fusion in Relativistic Heavy ion Collisions

2001-07-11

arxiv.org/abs/nucl-th/0107035v3

Nucl.Phys.A703:861-875,2002

Physics

Nuclear Physics

Nuclear Theory

Version to be published in Nuclear Physics A

Scientific paper

10.1016/S0375-9474(01)01666-9

The production of mesons in ultra-peripheral collisions of relativistic heavy ions is re-analyzed using a projection technique to calculate the amplitudes for the appropriate Feynman diagrams. The virtuality of the exchanged photons is fully accounted for in this approach. In the case of two-photon fusion, it is explicitly shown that the inclusion of nuclear form factors validates the equivalent photon approximation. However, this does not apply to three-photon fusion cross sections. The cross section of J/\psi production in ultra-peripheral collisions at RHIC and LHC are shown to be much smaller than the cross sections for the production of C=even mesons of similar masses.

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