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Calculating scattering amplitudes efficiently

Lance J. Dixon
(
- SLAC
)

Jan, 1996

46 pages

Part of QCD and beyond. Proceedings, Theoretical Advanced Study Institute in Elementary Particle Physics, TASI-95, Boulder, USA, June 4-30, 1995, 539-584

Contribution to:

Theoretical Advanced Study Institute in Elementary Particle Physics (TASI 95): QCD and Beyond, 539-584

e-Print:

hep-ph/9601359 [hep-ph]

Report number:

SLAC-PUB-7106

View in:

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Abstract:

We review techniques for more efficient computation of perturbative scattering amplitudes in gauge theory, in particular tree and one-loop multi-parton amplitudes in QCD. We emphasize the advantages of (1) using color and helicity information to decompose amplitudes into smaller gauge-invariant pieces, and (2) exploiting the analytic properties of these pieces, namely their cuts and poles. Other useful tools include recursion relations, special gauges and supersymmetric rearrangements.

inspirereview:I-c-3
lectures: Boulder 1995/06/04
quantum chromodynamics
perturbation theory: higher-order
scattering amplitude: factorization
factorization: scattering amplitude
helicity
supersymmetry
bibliography

References(63)

Figures(0)

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