Pion decay in magnetic fields
Institute for Theoretical Physics, Universität Regensburg, D-93040 Regensburg, Germany
2 Department of Theoretical Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
3 Institute for Theoretical Physics, Goethe Universität Frankfurt, D-60438 Frankfurt am Main, Germany
* Speaker, e-mail: firstname.lastname@example.org
Published online: 26 March 2018
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.
© The Authors, published by EDP Sciences, 2018
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