6533b7d0fe1ef96bd125a517
RESEARCH PRODUCT
Four-dimensional unsubtraction with massive particles
German RodrigoFélix Driencourt-manginGerman F. R. Sborlinisubject
QuarkPhysicsParticle physicsNuclear and High Energy Physics010308 nuclear & particles physicsScalar (mathematics)Degenerate energy levelsFOS: Physical sciencesKinematics01 natural sciencesVector bosonMassless particleTheoretical physicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciences010306 general physicsdescription
We extend the four-dimensional unsubtraction method, which is based on the loop-tree duality (LTD), to deal with processes involving heavy particles. The method allows to perform the summation over degenerate IR configurations directly at integrand level in such a way that NLO corrections can be implemented directly in four space-time dimensions. We define a general momentum mapping between the real and virtual kinematics that accounts properly for the quasi-collinear configurations, and leads to an smooth massless limit. We illustrate the method first with an scalar toy example, and then analyse the case of the decay of a scalar or vector boson into a pair of massive quarks. The results presented in this paper are suitable for the application of the method to any multipartonic process.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-10-28 |