26-31 July 2021
Mexico City
Mexico/General timezone
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- hadron2021@nucleares.unam.mx
Contact information
Contribution Parallel
Mexico City
-
Meson Spectroscopy
Generalizing the Lellouch-Luscher formula to three-particle decays
Speakers
- Prof. Stephen SHARPE
Primary authors
- Prof. Stephen SHARPE (University of Washington)
Co-authors
- Mr. Fernando ROMERO-LÓPEZ (University of Valencia)
- Max HANSEN (University of Edinburgh)
Files
Abstract
We generalize the Lellouch-Lüscher formalism to decays to three degenerate scalar particles. The formalism allows a lattice calculation of the K\to3\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.