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Manuscript Title: A Monte Carlo program to generate mini-jet events in the two-photon process.
Authors: A. Miyamoto, H. Hayashii
Program title: MINIJET
Catalogue identifier: ADDF_v1_0
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 96(1996)87
Programming language: Fortran.
Computer: FACOM-M1800.
Operating system: OSIV MSP-E20, OSIV EX.
RAM: 2K words
Word size: 32
Peripherals: disc.
Keywords: Particle physics, Elementary, Qed, Monte carlo simulation, Event generation, Mini-jet, Two-photon process, Resolved photon process.
Classification: 11.4.

Nature of problem:
In high energy two-photon processes in e+e- reactions, the hadronic components of the photon contribute significantly to the process. In particular, jet production in (almost real) photon-photon collisions offers an opportunity to test perturbative QCD. In addition, the understanding of the process is indispensable for designing future high energy e+e- linear colliders.

Solution method:
The cross sections of the resolved photon processes are calculated at the parton level by a convolution of the photon luminosity function, the photon structure functions and the sub-process cross sections. Based on the calculation, high-pt partons and remnant partons accompanied by the resolved photon processes are generated. They are subsequently hadronized, while neglecting scattered e+-.

Running time:
The running times depend upon the physical parameters. In the case of a default parameter set, it takes 487 sec to calculate the cross section on a FACOM-M1800 computer, while it takes 2.85 sec to generate 1k events.