Event generator for the single- and double-photon emission associated with neutrino pair-production

Details Event generator for the single- and double-photon emission associated with neutrino pair-production Event generator for the single- and double-photon emission associated with neutrino pair-production

1999-08-20

arxiv.org/abs/hep-ph/9908422v1

Comput.Phys.Commun. 136 (2001) 250-268

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 pages, 12 figures

Scientific paper

10.1016/S0010-4655(00)00254-X

A new event generator is proposed for two processes e+e- -> nu nu-bar gamma and e+e- -> nu nu-bar gamma gamma where nu includes all the neutrino species. The exact matrix elements of single- and double-photon emission, generated by the GRACE system, are convoluted with the QED parton shower(QEDPS) to deal with the initial state radiations(ISR). It is pointed out that a careful treatment is required to avoid the double counting of the radiative photons between the matrix elements and the ISR part. A detailed comparison of grc-nu-nu-gamma with the O(alpha) calculations and other similar Monte Carlo generators is discussed on the total cross section and on various distributions. It is also examined how the possible effects of the anomalous triple-gauge-boson couplings can be observed.

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