The double-soft integral for an arbitrary angle between hard radiators

Abstract We consider the double-soft limit of a generic QCD process involving massless partons and integrate analytically the double-soft eikonal functions over the phase-space of soft partons (gluons or quarks) allowing for an arbitrary relative angle between the three-momenta of two hard massless...

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Main Authors: Fabrizio Caola, Maximilian Delto, Hjalte Frellesvig, Kirill Melnikov
Format: Article
Language:English
Published: SpringerOpen 2018-08-01
Series:European Physical Journal C: Particles and Fields
Online Access:http://link.springer.com/article/10.1140/epjc/s10052-018-6180-7
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author Fabrizio Caola
Maximilian Delto
Hjalte Frellesvig
Kirill Melnikov
author_facet Fabrizio Caola
Maximilian Delto
Hjalte Frellesvig
Kirill Melnikov
author_sort Fabrizio Caola
collection DOAJ
description Abstract We consider the double-soft limit of a generic QCD process involving massless partons and integrate analytically the double-soft eikonal functions over the phase-space of soft partons (gluons or quarks) allowing for an arbitrary relative angle between the three-momenta of two hard massless radiators. This result provides one of the missing ingredients for a fully analytic formulation of the nested soft-collinear subtraction scheme described in Caola et al. (Eur Phys J C 77(4):248, 2017).
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spelling doaj.art-1a70c1421b964e1bbf9597a9467c62352022-12-21T19:25:18ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522018-08-0178811110.1140/epjc/s10052-018-6180-7The double-soft integral for an arbitrary angle between hard radiatorsFabrizio Caola0Maximilian Delto1Hjalte Frellesvig2Kirill Melnikov3IPPP, Durham UniversityInstitute for Theoretical Particle Physics, KITInstitute for Theoretical Particle Physics, KITInstitute for Theoretical Particle Physics, KITAbstract We consider the double-soft limit of a generic QCD process involving massless partons and integrate analytically the double-soft eikonal functions over the phase-space of soft partons (gluons or quarks) allowing for an arbitrary relative angle between the three-momenta of two hard massless radiators. This result provides one of the missing ingredients for a fully analytic formulation of the nested soft-collinear subtraction scheme described in Caola et al. (Eur Phys J C 77(4):248, 2017).http://link.springer.com/article/10.1140/epjc/s10052-018-6180-7
spellingShingle Fabrizio Caola
Maximilian Delto
Hjalte Frellesvig
Kirill Melnikov
The double-soft integral for an arbitrary angle between hard radiators
European Physical Journal C: Particles and Fields
title The double-soft integral for an arbitrary angle between hard radiators
title_full The double-soft integral for an arbitrary angle between hard radiators
title_fullStr The double-soft integral for an arbitrary angle between hard radiators
title_full_unstemmed The double-soft integral for an arbitrary angle between hard radiators
title_short The double-soft integral for an arbitrary angle between hard radiators
title_sort double soft integral for an arbitrary angle between hard radiators
url http://link.springer.com/article/10.1140/epjc/s10052-018-6180-7
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