Monday, July 16, 2012

1207.3332 (Andreas van Hameren et al.)

Multi-gluon helicity amplitudes with one off-shell leg within high
energy factorization
   [PDF]

Andreas van Hameren, Piotr Kotko, Krzysztof Kutak
Basing on the Slavnov-Taylor identities, we derive a new prescription to obtain gauge invariant tree-level scattering amplitudes for the process g*g->Ng within high energy factorization. Using the helicity method, we check the formalism up to several final state gluons, and we present analytical formulas for the the helicity amplitudes for N=2. We also compare the method with Lipatov's effective action approach.
View original: http://arxiv.org/abs/1207.3332

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