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Manuscript Title: Monte Carlo code BAMJET to simulate the fragmentation of quark and diquark jets.
Authors: S. Ritter
Program title: BAMJET
Catalogue identifier: ACFQ_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 31(1984)393
Programming language: Fortran.
Computer: ESER.
Operating system: MVT 6.1.
RAM: 105K words
Word size: 32
Keywords: Elementary, Particle physics, Monte carlo, Phase space, Reactions, Quark jets And hadronization, Chain decay model.
Classification: 11.2.

Subprograms used:
Cat Id Title Reference
ACFS_v1_0 DECAY CPC 31(1984)411

Nature of problem:
In high energy electron-positron, lepton-nucleon and hadron-hadron collisions quark and diquark jets are produced. The Monte Carlo code BAMJET simulates the hadronization of single (anti-) quark and (anti-) diquark jets as well as the fragmentation of complete quark-antiquark, (anti-) quark - (anti-) diquark and diquark-antidiquark two jet events into hadrons on the basis of a phenomenological chain decay model.

Solution method:
The chain decay of quark and diquark jets is simulated by a Monte-Carlo model.

The model includes neither the emission of additional gluons, typical for jet energies above approximately 10 GeV, nor the description of isotropic events as they (e.g.) occur in e+e- -annihilation below square root s =3-5 GeV. Bottom quarks are not treated by the code.

Running time:
The running time depends strongly on the initial energy of the one jet or two jet system. Simulating (e.g.) one quark-antiquark two jet event produced in e+e- -annihilation, one needs for centre of mass energies square root s = 30 GeV about 0.2 seconds of central processor time on a ESER 1040 computer.