Semileptonic decays of heavy-light pseudoscalar mesons
Nazario Tantalo
TL;DR
This paper presents a lattice QCD calculation of form factors for semileptonic decays of heavy-light pseudoscalar mesons, specifically B to D transitions, including effects of non-zero lepton mass.
Contribution
It provides new lattice QCD results for the form factors governing B to D semileptonic decays, including the differential decay rate with massive leptons.
Findings
Calculated form factors at non-zero momentum transfer
Determined decay rates for light and tau leptons
Enhanced understanding of heavy-light meson decay dynamics
Abstract
I discuss the results of a recent quenched lattice calculation of the two independent form factors parametrizing the semileptonic decays between heavy-light pseudoscalar mesons. The differential decay rate of the process B --> D l nu has been calculated at non vanishing momentum transfer both in the case of the light leptons, l=e,mu, and in the case of a non vanishing lepton mass, l=tau.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research