Scattering amplitudes with open loops.
- Cascioli F Institut für Theoretische Physik, Universität Zürich, 8057 Zürich, Switzerland.
- Maierhöfer P
- Pozzorini S
- 2012-05-01
Published in:
- Physical review letters. - 2012
English
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.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1103/PhysRevLett.108.111601
- PMID 22540459
- Persistent URL
- https://sonar.ch/global/documents/146756
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