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Manuscript Title: JetViP 2.1: The hbook version.
Authors: B. Potter
Program title: JetViP version 2.1
Catalogue identifier: ADKC_v2_0
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 133(2000)105
Programming language: Fortran.
RAM: 9M words
Keywords: Elementary particle physics, Event simulation, Quantum chromodynamics, Jet physics, Deeply inelastic electron-proton (eP) and electron-photon (egamma) scattering(DIS), Photoproduction, Transition from photoproduction to DIS.
Classification: 11.2.

Nature of problem:
In eP- and egamma-scattering experiments, the hadronic final state can be analyzed by jet cluster algorithms, yielding inclusive single- and dijet cross sections. These can be obtained in a continuous range of photon virtuality. The cross sections allow the extraction of parameters, such as alphas, Alpha(MSbar) or parton densities (also of the virtual photon), if the respective jet cross sections are theoretically known.

Solution method:
JetViP is a computer program for the calculation of inclusive single- and dijet cross sections in eP- and egamma-scattering in NLO QCD. The virtuality of the photon, radiated by the incoming electron, can be chosen in a continuous range, reaching from photoproduction into deep inelastic scattering. The various contributions to the full jet cross section, including the resolved photon contributions, are implemented. The calculation is based on the phase-space-slicing method.
The program uses VEGAS (multidimensional Monte Carlo integration routine), PDFLIB, SaSgam, GRS (parameterizations of parton densities).

Running time:
Varies strongly from LO to NLO and depends on type of subprocess (direct or resolved). At LO, running times of several minutes for a cross section are typical. At NLO, the running time for such a cross section is typically several hours.