Speaker
Bai-Long Hoid
(University of Bern)
Description
Dilepton decays of the pseudoscalar mesons have been drawing particular interest, thanks to their sensitivity to both the QCD dynamics at low energy and also signals beyond the Standard model. In the first part of the talk, we present our work on an improved Standard-Model prediction for the rare decay $\pi^0 \to e^+e^-$, and compare it with the first determination on the lattice that predicted a lower $\pi^0 \to \gamma \gamma$ decay width as byproduct. In the second part, we discuss the ongoing work on $K_L \to \ell^+\ell^−$ decays and its connection to lattice QCD.
| Topical area | Quark and Lepton Flavor Physics |
|---|
Primary author
Bai-Long Hoid
(University of Bern)
Co-authors
Martin Hoferichter
(University of Bern)
Jacobo Ruiz de Elvira