Programs in Physics & Physical Chemistry
|[Licence| Download | New Version Template] adeo_v1_0.tar.gz(1637 Kbytes)|
|Manuscript Title: grc4f v1.1: a four-fermion event generator for e+e- collisions.|
|Authors: J. Fujimoto, T. Ishikawa, T. Kaneko, K. Kato, S. Kawabata, Y. Kurihara, T. Munehisa, D. Perret-Gallix, Y. Shimizu, H. Tanaka|
|Program title: grc4f v1.1|
|Catalogue identifier: ADEO_v1_0|
Distribution format: tar.gz
|Journal reference: Comput. Phys. Commun. 100(1997)128|
|Programming language: Fortran.|
|Operating system: UNIX.|
|RAM: 36M words|
|Keywords: Particle physics, Elementary, W-boson, Z-boson, E+e- colliders, Four-fermion, Isr, Fsr, Psqed, Coulomb correction, Event generator, Parton shower, Event simulation, Hadronization, Colour base.|
Nature of problem:
Study of W boson physics and of background processes for new particle search at LEP-2 and beyond.
The automatic amplitude generator GRACE is used to get the necessary helicity amplitudes for all the four-fermion processes. Specific corrections are then introduced to deal with the gauge boson width, the radiative corrections, the colour assignment, the hadronization, the Coulomb correction and the anomalous coupling.
The running time depends on the number of diagrams of the selected process, on the required cross-section accuracy and on the applied cuts. For instance, the process e- nubare u dbar takes 20 minutes to reach a 0.5 per cent accuracy on the total cross section integration with HP-735/99.
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