Details

Autor(en) / Beteiligte

• Cascioli, F
• Maierhöfer, P
• Pozzorini, S

Titel

Scattering amplitudes with open loops

Ist Teil von

• Physical review letters, 2012-03, Vol.108 (11), p.111601-111601, Article 111601

Ort / Verlag

United States

Erscheinungsjahr

2012

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• We introduce a new technique to generate scattering amplitudes at one loop. Traditional tree algorithms, which handle diagrams with fixed momenta, are promoted to generators of loop-momentum polynomials that we call open loops. Combining open loops with tensor-integral and Ossola-Papadopoulos-Pittau reduction results in a fully flexible, very fast, and numerically stable one-loop generator. As demonstrated with nontrivial applications, the open-loop approach will permit us to obtain precise predictions for a very wide range of collider processes.