Towards a complete $\gamma\gamma \to 4~$leptons Monte Carlo

Abstract : The total cross-section of the $\gamma \gamma \to 4 $ leptons process is known to have a large constant value at high energy, but a complete and exact calculation of related differential spectra does not exist yet. However a complete study of the process is important at NLC for luminosity measurements or for background estimations. We here report on our various steps in that direction, including the implementation of a first new calculation of helicity amplitudes in a Monte-Carlo generator.
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Submitted on : Tuesday, December 11, 2007 - 11:03:39 AM
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C. Carimalo, W. da Silva, F. Kapusta. Towards a complete $\gamma\gamma \to 4~$leptons Monte Carlo. International Conference on the Structure and Interactions of the Photon, including the 12th International Workshop on Photon-Photon Collisions, May 1999, Freiburg, Germany. pp.391-393, ⟨10.1016/S0920-5632(00)00183-3⟩. ⟨in2p3-00195566⟩

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