6533b871fe1ef96bd12d2483
RESEARCH PRODUCT
New method for calculating electromagnetic effects in semileptonic beta-decays of mesons
Chien Yeah SengLuchang JinLuchang JinMikhail GorchteinUlf-g. MeißnerUlf-g. MeißnerUlf-g. MeißnerXu Fengsubject
Nuclear and High Energy PhysicsParticle physicsChiral perturbation theoryelectromagnetic [effect]MesonNuclear TheoryHigh Energy Physics::LatticeHadronFOS: Physical scienceschiral [perturbation theory]anomalyLattice QCD01 natural sciences530High Energy Physics - ExperimentNuclear Theory (nucl-th)Matrix (mathematics)High Energy Physics - Experiment (hep-ex)Kaon PhysicsPionHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics - Lattice0103 physical sciencesBeta (velocity)lcsh:Nuclear and particle physics. Atomic energy. Radioactivityddc:530Precision QEDNuclear Experiment (nucl-ex)010306 general physicsNuclear ExperimentPhysicsUnitarity010308 nuclear & particles physicsComputer Science::Information RetrievalHigh Energy Physics - Lattice (hep-lat)High Energy Physics::Phenomenologysemileptonic decay [meson]lattice field theorysemileptonic decay [pi]Lattice QCDHigh Energy Physics - PhenomenologyChiral Lagrangianslcsh:QC770-798High Energy Physics::Experimentunitarity [CKM matrix]description
We construct several classes of hadronic matrix elements and relate them to the low-energy constants in Chiral Perturbation Theory that describe the electromagnetic effects in the semileptonic beta decay of the pion and the kaon. We propose to calculate them using lattice QCD, and argue that such a calculation will make an immediate impact to a number of interesting topics at the precision frontier, including the outstanding anomalies in $|V_{us}|$ and the top-row Cabibbo-Kobayashi-Maskawa matrix unitarity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-10-27 |