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Manuscript Title: The Monte Carlo code DECAY to simulate the decay of baryon and meson resonances.
Authors: K. Hanssgen, S. Ritter
Program title: DECAY
Catalogue identifier: ACFS_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 31(1984)411
Programming language: Fortran.
Computer: ESER.
Operating system: MVT 6.1.
RAM: 70K words
Word size: 32
Keywords: Elementary, Particle physics, Scattering, Phase space, Monte carlo, Two and three particle Decays of hadron Resonances.
Classification: 11.2.

Revision history:
Type Tit le Reference
correction 000ACORRECTION 03/07/87 See below

Nature of problem:
In high energy particle collisions secondary particles will be created, among which are also unstable hadron resonances. The code DECAY samples the decay of unpolarized baryon and meson resonances in the laboratory frame. DECAY treats some of the resonances including all baryon resonances of the spin 3/2+ decuplet and all meson resonances of the spin 1- nonet. A given resonance decays via two or three particle decay steps until all decay products are stable particles.

Solution method:
The decay of baryon and meson resonances is simulated by a two and three body phase space Monte-Carlo model.

Restrictions:
Only decay modes according to the Particle Group tables with branching ratio greater than 1% are considered. The program also treats some decays of charmed mesons and baryons.

Running time:
The decay of a typical resonance into three final state particle needs approximately 0.01 seconds of central processor time on an ESER 1040 computer.

CORRECTION SUMMARY
Manuscript Title: Unpublished correction to the Monte Carlo code DECAY to simulate the decay of baryon and meson resonances.
Authors: K. Hanssgen, S. Ritter
Program title: 000ACORRECTION 03/07/87
Catalogue identifier: ACFS_v1_0
Distribution format: gz
Classification: 11.2.