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arXiv · 1207.3332

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

Andreas van Hameren·Piotr Kotko·Krzysztof Kutak
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Abstract

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.

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Andreas van Hameren, Piotr Kotko, Krzysztof Kutak. 2012-10-23. Multi-gluon helicity amplitudes with one off-shell leg within high energy factorization. https://doi.org/10.1007/jhep12(2012)029

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