General formulae for $f_1 \to f_2 \gamma$

By L. Lavoura. 2003

214 citations recorded by the source corpus.

Abstract. At one-loop level the decay $f_1 \to f_2 \gamma$, where f1 and f2 are two spin-1/2 particles with the same electric charge, is mediated by a boson B and a spin-1/2 fermion F. The boson B may have either spin - interacting with the fermions through the Dirac matrices 1 and $\gamma_5$ - or spin 1 - with V+A and V-A couplings to the fermions. I give general formulae for the one-loop electroweak amplitude of $f_1 \to f_2 \gamma$ in all these cases.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4c2517d65685cd7502259771d3166002673f225f