$\pi \to l\nu \gamma$ Form Factors at Two-loop

J. Bijnens; P. Talavera

$\pi \to l\nu \gamma$ Form Factors at Two-loop

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arxiv hep-ph/9610269 v2 pith:NFXETLF6 submitted 1996-10-07 hep-ph

J. Bijnens , P. Talavera This is my paper · ORCID

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keywords gammafactorsformchiralchptcomputecorrectionsdecay

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abstract

Within Chiral Perturbation Theory (CHPT) we compute the form factors A, V and $\gamma = A/V$ in the $\pi \to \nu l \gamma$ decay to $O(p^6)$. A and $\gamma$ obtain corrections of order 25%.

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Real photon emissions in leptonic decays
hep-lat 2019-08 conditional novelty 5.0 of 10

A lattice QCD calculation extracts the structure-dependent form factors for radiative leptonic decays of kaons and D mesons, with preliminary results that agree qualitatively with chiral perturbation theory.

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