A Monte Carlo for POLarized (semi-inclusive) Deep Inelastic Scattering

Details A Monte Carlo for POLarized (semi-inclusive) Deep Inelastic Scattering A Monte Carlo for POLarized (semi-inclusive) Deep Inelastic Scattering

1997-04-14

arxiv.org/abs/hep-ph/9704313v1

Comput.Phys.Commun. 105 (1997) 42-61

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, LaTeX, 6 eps figures included, to be published in Computer Physics Communications

Scientific paper

10.1016/S0010-4655(97)00063-5

POLDIS is a Monte Carlo program for polarized (semi-inclusive) deep inelastic scattering (DIS). Unpolarized DIS events are generated with the existing lepto-production event generators LEPTO for DIS and AROMA for Heavy Flavor production. The relevant spin asymmetries are computed at partonic level to first order in alpha_s for each generated event, and are then convoluted with the corresponding ratio between the polarized and unpolarized parton distribution functions (i.e. parton polarization). This procedure provides a polarization weight for each event. The average of these polarization weights gives the polarized cross section spin-asymmetry for the generated sample. The code consists of a set of subroutines to be linked with LEPTO and/or AROMA.

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