Pion decay in magnetic fields
High Energy Physics - Lattice
2018-04-18 v1 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
The leptonic decay of the charged pion in the presence of background magnetic fields is investigated using quenched Wilson fermions. It is demonstrated that the magnetic field opens up a new channel for this decay. The magnetic field-dependence of the decay constants for both the ordinary and the new channel is determined. Using these inputs from QCD, we calculate the total decay rate perturbatively.
Cite
@article{arxiv.1710.01502,
title = {Pion decay in magnetic fields},
author = {Gunnar S. Bali and Bastian B. Brandt and Gergely Endrodi and Benjamin Glaessle},
journal= {arXiv preprint arXiv:1710.01502},
year = {2018}
}
Comments
8 pages, 6 figures, talk presented at the 35th International Symposium on Lattice Field Theory, 18-24 June 2017, Granada, Spain