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

C. A. Bertulani·F. Navarra
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Abstract

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/ψproduction 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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C. A. Bertulani, F. Navarra. 2001-12-17. Two- and Three-photon Fusion in Relativistic Heavy ion Collisions. https://doi.org/10.1016/s0375-9474(01)01666-9

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