0000000000654432

AUTHOR

Robin Baumeister

showing 2 related works from this author

Cutoff dependence of the thrust peak position in the dipole shower

2020

We analyse the dependence of the peak position of the thrust distribution on the cutoff value in the Nagy-Soper dipole shower. We compare the outcome of the parton shower simulations to a relation of the dependence from an analytic computation, derived within soft-collinear effective theory. We show that the result of the parton shower simulations and the analytic computation are in good agreement.

Physics and Astronomy (miscellaneous)Physics::Instrumentation and DetectorsComputationAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical scienceslcsh:AstrophysicsThrust01 natural sciencesHigh Energy Physics - Phenomenology (hep-ph)Position (vector)lcsh:QB460-4660103 physical sciencesEffective field theoryCutofflcsh:Nuclear and particle physics. Atomic energy. Radioactivity010306 general physicsParton showerEngineering (miscellaneous)Physics010308 nuclear & particles physicsAstrophysics::Instrumentation and Methods for AstrophysicsComputational physicsDipoleHigh Energy Physics - PhenomenologyDistribution (mathematics)lcsh:QC770-798High Energy Physics::Experiment
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Vanishing of certain cuts or residues of loop integrals with higher powers of the propagators

2019

Starting from two-loops, there are Feynman integrals with higher powers of the propagators. They arise from self-energy insertions on internal lines. Within the loop-tree duality approach or within methods based on numerical unitarity one needs (among other things) the residue when a raised propagator goes on-shell. We show that for renormalised quantities in the on-shell scheme these residues can be made to vanish already at the integrand level.

Loop (topology)PhysicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)UnitarityFeynman integralScheme (mathematics)Shell (structure)FOS: Physical sciencesPropagatorDuality (optimization)Mathematical physicsPhysical Review D
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