6533b85afe1ef96bd12b9850
RESEARCH PRODUCT
Complex-mass scheme and perturbative unitarity
Stefan SchererT. BauerGeorge JaparidzeJambul GegeliaJambul GegeliaJambul Gegeliasubject
PhysicsCoupling constantCondensed Matter::Quantum GasesHigh Energy Physics - TheoryNuclear and High Energy PhysicsUnitarityOrder (ring theory)PropagatorFOS: Physical sciencesAstronomy and AstrophysicsFermionAtomic and Molecular Physics and OpticsVector bosonRenormalizationHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics - Theory (hep-th)Scheme (mathematics)Mathematical physicsdescription
We derive cutting rules for loop integrals containing propagators with complex masses. Using a field-theoretical model of a heavy vector boson interacting with a light fermion, we demonstrate that the complex-mass scheme respects unitarity order by order in a perturbative expansion provided that the renormalized coupling constant remains real.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-11-07 |