Speaker
Fernando Romero-López
Description
In this talk, I will review our recent generalization of the Lellouch-Lüscher to study decays to three particles. First, the result in a simplified theory with three identical particles will be presented, and then the generalizations needed to study phenomenologically relevant three-pion decays will be discussed. Specific processes for which this formalism is applicable are the CP-violating $K \to 3\pi$ weak decay, the isospin-breaking $\eta \to 3\pi$ QCD transition, and the electromagnetic $\gamma^* \to 3\pi$ amplitudes that enter the calculation of the hadronic vacuum polarization contribution to muonic g − 2.
Author
Co-authors
Maxwell Hansen
(The University of Edinburgh (GB))
Stephen Sharpe
(University of Washington)
