Scattering amplitudes with massive fermions using BCFW recursion

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dc.creatorOzeren, K. J.
dc.creatorStirling, W. J.
dc.date2006-03-09
dc.date.accessioned2026-07-07T12:25:26Z
dc.date.available2026-07-07T12:25:26Z
dc.descriptionWe study the QCD scattering amplitudes for \bar{q}q \to gg and \bar{q}q \to ggg where q is a massive fermion. Using a particular choice of massive fermion spinor we are able to derive very compact expressions for the partial spin amplitudes for the 2 \to 2 process. We then investigate the corresponding 2 \to 3 amplitudes using the BCFW recursion technique. For the helicity conserving partial amplitudes we again derive very compact expressions, but were unable to treat the helicity-flip amplitudes recursively, except for the case where all the gluon helicities are the same. We therefore evaluate the remaining partial amplitudes using standard Feynman diagram techniques.
dc.description21 pages
dc.identifierhttps://arxiv.org/abs/hep-ph/0603071
dc.identifierhttp://arxiv.org/abs/hep-ph/0603071
dc.identifierEur.Phys.J.C48:159-168,2006
dc.identifierdoi:10.1140/epjc/s10052-006-0007-7
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214611
dc.subjectHigh Energy Physics - Phenomenology
dc.titleScattering amplitudes with massive fermions using BCFW recursion
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