6533b85cfe1ef96bd12bc078

RESEARCH PRODUCT

Rare Z Decays and Neutrino Flavor Universality

Gauthier DurieuxGauthier DurieuxEric KuflikShamayita RayShamayita RayYuval GrossmanMatthias König

subject

PhysicsParticle physics010308 nuclear & particles physicsPhysics::Instrumentation and DetectorsPhysics beyond the Standard ModelSolar neutrinoHigh Energy Physics::PhenomenologyFOS: Physical sciencesSolar neutrino problem01 natural sciencesUniversality (dynamical systems)Nuclear physicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesMeasurements of neutrino speedddc:530High Energy Physics::ExperimentNeutrino010306 general physicsNeutrino oscillationLepton

description

We study rare four-body decays of the Z-boson involving at least one neutrino and one charged lepton. Large destructive interferences make these decays very sensitive to the Z couplings to neutrinos. As the identified charged leptons can determine the neutrino flavors, these decays probe the universality of the Z couplings to neutrinos. The rare four-body processes could be accurately measured at future lepton colliders, leading to percent level precision.

https://bib-pubdb1.desy.de/record/291887