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Manuscript Title: SUSY23 v2.0: An event generator for supersymmetric processes at e+e- colliders.
Authors: J. Fujimoto, K. Hikasa, T. Ishikawa, M. Jimbo, T. Kaneko, K. Kato, S. Kawabata, T. Kon, M. Kuroda, Y. Kurihara, T. Munehisa, D. Perret-Gallix, Y. Shimizu, H. Tanaka
Program title: SUSY23
Catalogue identifier: ADHU_v1_0
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 111(1998)185
Programming language: Fortran.
Computer: HP9000.
Operating system: UNIX.
RAM: 23M words
Word size: 32
Keywords: Particle physics, Elementary, Qcd, Supersymmetry, E+e- colliders, Isr, Psqed, Event generator, Spin correlation, Hadronization.
Classification: 11.5.

Nature of problem:
Study of supersymmetric particle search at LEP2.

Solution method:
The automatic amplitude generator GRACE is used to get the necessary helicity amplitudes for twenty-three sparticle production processes. The specific corrections such as the initial state radiation or hadronization are implemented in the program. Sparticle widths and decay branching ratios for some modes are calculated. Each event of final state is then generated according to these probabilities.

Running time:
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, on a HP-755/99, the process e+e- -> e+e~Rlambda10 takes 20 minutes to reach a 0.5% accuracy on the total cross section.