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- URN to cite this document:
- urn:nbn:de:bvb:355-epub-383543
- DOI to cite this document:
- 10.5283/epub.38354
Abstract
The leptonic decay of charged pions is investigated in the presence of background magnetic fields. In this situation, Lorentz symmetry is broken, and new fundamental decay constants need to be introduced, associated with the decay via the vector part of the electroweak current. We calculate the magnetic field dependence of both the usual and a new decay constant nonperturbatively on the lattice. ...

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