LUSIFER: A LUcid approach to six FERmion production - INSPIRE

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LUSIFER: A LUcid approach to six FERmion production

Stefan Dittmaier
(
- DESY
)
,
Markus Roth
(
- Karlsruhe U.
)

Jun, 2002

39 pages

Published in:

Nucl.Phys.B 642 (2002) 307-343

e-Print:

hep-ph/0206070 [hep-ph]

DOI:

10.1016/S0550-3213(02)00640-5

Report number:

DESY-02-081,
KA-TP-10-2002

View in:

ADS Abstract Service

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Abstract:

LUSIFER is a Monte Carlo event generator for all processes e+e-->6fermions, which is based on the multi-channel Monte Carlo integration technique and employs the full set of tree-level diagrams. External fermions are taken to be massless, but can be arbitrarily polarized. The calculation of the helicity amplitudes and of the squared matrix elements is presented in a compact way. Initial-state radiation is included at the leading logarithmic level using the structure-function approach. The discussion of numerical results contains a comprehensive list of cross sections relevant for a 500GeV collider, including a tuned comparison to results obtained with the combination of the WHIZARD and MADGRAPH packages as far as possible. Moreover, for off-shell top-quark pair production and the production of a Higgs boson in the intermediate mass range we additionally discuss some phenomenologically interesting distributions. Finally, we numerically analyze the effects of gauge-invariance violation by comparing various ways of introducing decay widths of intermediate top quarks, gauge and Higgs bosons.

Note:

39 pages, latex, 14 postscript files, some minor misprints corrected, version to appear in Nucl.Phys.B Report-no: DESY 02-081, KA-TP-10-2002 Journal-ref: Nucl.Phys. B642 (2002) 307-343

electron positron: annihilation
final state: (6fermion)
scattering amplitude: helicity
structure function
leading logarithm approximation
top: pair production
top
Higgs particle: electroproduction
gauge boson: electroproduction
phase space

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