Programs in Physics & Physical Chemistry
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|Manuscript Title: A Monte Carlo event generator for high energy hadron-hadron collisions: ECCO 2.0.|
|Authors: J. Pan|
|Program title: ECCO 2.0|
|Catalogue identifier: ACPM_v1_0|
Distribution format: gz
|Journal reference: Comput. Phys. Commun. 78(1993)190|
|Programming language: Fortran.|
|Computer: VAX CLUSTER.|
|Operating system: VMS, UNIX.|
|RAM: 100K words|
|Word size: 32|
|Keywords: Particle physics, Elementary, Event simulation, Monte carlo event Generator, Geometrical model, Eikonal formalism, Cut pomerons, Clusters, Self-similar branching, Hadronization, Hadronic final states.|
Nature of problem:
A hadron is a complicated, extended object. The majority of high energy hadron-hadron collision events contains a large number of final state hadrons. Because of the low transverse momenta of the produced hadrons, such process can not be understood in terms of the quantum chromo- dynamics (QCD) by using perturbative calculations.
Eikonal formalism is used to describe the geometrical property of hadrons. The whole collision process is reduced to a series of basic interactions, or the cut Pomerons in the Regge theory. The evolution of particle production process is modelled with a self-similar branching mechanism.
The program is applicable at collision energy sqrt(s) < 100 GeV, but must be modified to include hard collision if sqrt(s) exceeds 100 GeV.
Depends on energy. An example: pp collision at sqrt(s) = 22 GeV, approximately 50 events/s.
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