Geometry of ultraperipheral nuclear collisions

Abstract

It is advocated that geometry of the interaction region of two heavy nuclei colliding at large impact parameters is important for the relative role of light-by-light scattering and QCD-initiated processes. Exclusive production of resonances is possible by dense electromagnetic fields in the interior space between the nuclei. The cross section of these processes is evaluated and some examples are considered. It is speculated that the exclusive production of ${\rho }^0$-mesons by two-photon processes forbidden by the Landau-Yang rule may become allowed within strong magnetic fields.

7 pages, the text is modified and several references added

References in corpus (9)

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Cited by in corpus (3)

• Ultraperipheral nuclear interactions
• On the absence of shock waves and vacuum birefringence in Born--Infeld electrodynamics
• Thresholds of ultraperipheral processes