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Numerics for elliptic Feynman integrals

The Standard Model involves several heavy particles: the Z- and W-bosons, the Higgs boson and the top quark. Precision studies of these particles require on the theoretical side quantum corrections at the two-loop order and beyond. It is a well-known fact that starting from two-loops Feynman integra...

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Detalles Bibliográficos
Autores principales: Bogner, C, Hönemann, I, Tempest, K, Schweitzer, A, Weinzierl, S
Lenguaje:eng
Publicado: 2019
Materias:
Acceso en línea:https://dx.doi.org/10.23731/CYRM-2020-003.177
http://cds.cern.ch/record/2701763
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author Bogner, C
Hönemann, I
Tempest, K
Schweitzer, A
Weinzierl, S
author_facet Bogner, C
Hönemann, I
Tempest, K
Schweitzer, A
Weinzierl, S
author_sort Bogner, C
collection CERN
description The Standard Model involves several heavy particles: the Z- and W-bosons, the Higgs boson and the top quark. Precision studies of these particles require on the theoretical side quantum corrections at the two-loop order and beyond. It is a well-known fact that starting from two-loops Feynman integrals with massive particles can no longer be expressed in terms of multiple polylogarithms. This raises immediately the following question. What is the larger class of functions needed to express the relevant Feynman integrals? For single-scale two-loop Feynman integrals related to a single elliptic curve we have by now the answer: They are expressed as iterated integrals of modular forms [1]. This brings us to a second question: Is there an efficient method to evaluate these functions numerically in the full kinematic range? In this contribution we review how this can be done.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2019
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spelling oai-inspirehep.net-17373832020-10-16T22:19:00Zdoi:10.23731/CYRM-2020-003.177http://cds.cern.ch/record/2701763engBogner, CHönemann, ITempest, KSchweitzer, AWeinzierl, SNumerics for elliptic Feynman integralsParticle Physics - PhenomenologyThe Standard Model involves several heavy particles: the Z- and W-bosons, the Higgs boson and the top quark. Precision studies of these particles require on the theoretical side quantum corrections at the two-loop order and beyond. It is a well-known fact that starting from two-loops Feynman integrals with massive particles can no longer be expressed in terms of multiple polylogarithms. This raises immediately the following question. What is the larger class of functions needed to express the relevant Feynman integrals? For single-scale two-loop Feynman integrals related to a single elliptic curve we have by now the answer: They are expressed as iterated integrals of modular forms [1]. This brings us to a second question: Is there an efficient method to evaluate these functions numerically in the full kinematic range? In this contribution we review how this can be done.oai:inspirehep.net:17373832019
spellingShingle Particle Physics - Phenomenology
Bogner, C
Hönemann, I
Tempest, K
Schweitzer, A
Weinzierl, S
Numerics for elliptic Feynman integrals
title Numerics for elliptic Feynman integrals
title_full Numerics for elliptic Feynman integrals
title_fullStr Numerics for elliptic Feynman integrals
title_full_unstemmed Numerics for elliptic Feynman integrals
title_short Numerics for elliptic Feynman integrals
title_sort numerics for elliptic feynman integrals
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.23731/CYRM-2020-003.177
http://cds.cern.ch/record/2701763
work_keys_str_mv AT bognerc numericsforellipticfeynmanintegrals
AT honemanni numericsforellipticfeynmanintegrals
AT tempestk numericsforellipticfeynmanintegrals
AT schweitzera numericsforellipticfeynmanintegrals
AT weinzierls numericsforellipticfeynmanintegrals