First lattice calculation of radiative leptonic decay rates of pseudoscalar mesons

URN to cite this document:: urn:nbn:de:bvb:355-epub-454316
DOI to cite this document:: 10.5283/epub.45431

Desiderio, A. ; Frezzotti, R. ; Garofalo, M. ; Giusti, D. ; Hansen, M. ; Lubicz, V. ; Martinelli, G. ; Sachrajda, C. T. ; Sanfilippo, F. ; Simula, S. ; Tantalo, N.

Preview

License: Creative Commons Attribution 4.0
PDF - Published Version
(2MB)

XML
(659kB)

Date of publication of this fulltext: 01 Apr 2021 11:31

Alternative links to fulltext:DOI Publisher

Details

Preview

Export bibliographical data

Abstract

We present a nonperturbative lattice calculation of the form factors which contribute to the amplitudes for the radiative decays P→ℓ¯νℓγ, where P is a pseudoscalar meson and ℓ is a charged lepton. Together with the nonperturbative determination of the corrections to the processes P→ℓ¯νℓ due to the exchange of a virtual photon, this allows accurate predictions at O(αem) to be made for leptonic ...