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Automatic one-loop calculations with Sherpa+OpenLoops


Cascioli, F; Höche, S; Krauss, F; Maierhöfer, P; Pozzorini, S; Siegert, F (2014). Automatic one-loop calculations with Sherpa+OpenLoops. Journal of Physics : Conference Series, 523:012058.

Abstract

We report on the OpenLoops generator for one-loop matrix elements and its application to four-lepton production in association with up to one jet. The open loops algorithm uses a numerical recursion to construct the numerator of one-loop Feynman diagrams as functions of the loop momentum. In combination with tensor integrals this results in a highly efficient and numerically stable matrix element generator. In order to obtain a fully automated setup for the simulation of next-to-leading order scattering processes we interfaced OpenLoops to the Sherpa Monte Carlo event generator.

Abstract

We report on the OpenLoops generator for one-loop matrix elements and its application to four-lepton production in association with up to one jet. The open loops algorithm uses a numerical recursion to construct the numerator of one-loop Feynman diagrams as functions of the loop momentum. In combination with tensor integrals this results in a highly efficient and numerically stable matrix element generator. In order to obtain a fully automated setup for the simulation of next-to-leading order scattering processes we interfaced OpenLoops to the Sherpa Monte Carlo event generator.

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Additional indexing

Item Type:Journal Article, not refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2014
Deposited On:23 Feb 2015 12:14
Last Modified:08 Dec 2017 11:27
Publisher:IOP Publishing
ISSN:1742-6588
Publisher DOI:https://doi.org/10.1088/1742-6596/523/1/012058

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