Grcnunugamma: event generator for the single- and double-photon emission associated with neutrino pair-production. Y. Kurihara, J. Fujimoto, T. Ishikawa, Y. Shimizu, T. Munehisa.

PROGRAM SUMMARY
Title of program: GRCNuNuGamma
Catalogue identifier: ADNV
Ref. in CPC: 136(2001)250
Distribution format: tar gzip file
Operating system: UNIX
High speed store required: 14MK words
Number of lines in distributed program, including test data, etc: 72641
Keywords: Elementary particle physics, QED, Electron-positron collision, Radiative return, Anomalous three gauge boson couplings.
Programming language used: Fortran

Nature of physical problem:
Precise cross sections of hard photon productions with missing energy. Study of anomalous triple-gauge-boson couplings at LEP-2.

Method of solution:
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).

Restrictions:
Convergency of the integration may be bad when inappropriate experimental cuts are applied.

Typical running time:
1 hour.

Unusual features:
When errors of the integration are greater than several percent even with more than 10 M sampling points, please contact the authors.