Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-11-11
Comput.Phys.Commun. 111 (1998) 185-216
Physics
High Energy Physics
High Energy Physics - Phenomenology
36 pages, LaTeX
Scientific paper
10.1016/S0010-4655(98)00017-4
\susy23 is a Monte-Carlo package for generating supersymmetric (SUSY) processes at $e^+e^-$ colliders. Twenty-three types of SUSY processes with 2 or 3 final state particles at tree level are included in version 2.0. {\susy23} addresses event simulation requirements at $e^+e^-$ colliders such as LEP. Matrix elements are generated by GRACE with the helicity amplitude method for processes involving massive fermions. The phase space integration of the matrix element gives the total and differential cross sections, then unweighted events are generated. Sparticle widths and decay branching ratios are calculated. Each final state particle may then decay according to these probabilities. Spin correlations are taken into account in the decays of sparticles. Corrections of initial state radiation (ISR) are implemented in two ways, one is based on the electron structure function formalism and the second uses the parton shower algorithm called QEDPS. Parton shower and hadronization of the final quarks are performed through an interface to JETSET.
Fujimoto Junpei
Hikasa K.
Ishikawa Tadashi
Jimbo Masakazu
Kaneko Tak
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