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grcννγ: Event generator for the single- and double-photon emission associated with neutrino pair-production☆☆ This work was supported in part by the Ministry of Education, Science and Culture, Japan under the Grant-in-Aid for Scientific Research No.11440083.

Elsevier B.V.
Publication Date
DOI: 10.1016/s0010-4655(00)00254-x
  • Event Generator
  • Photon Radiation
  • Missing Energy
  • Anomalous Gauge-Boson Coupling
  • Physics


Abstract A new event generator is proposed for two processes e +e −→ν ν ̄ γ and e +e −→ν ν ̄ γγ where ν ν ̄ 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 grcννγ with the O(α) 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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