A revision of radiative corrections to double-Dalitz decays

Abstract

The radiative corrections to double-Dalitz (P →¯ ¯ ) decays are revisited and completed up to next-to-leading order in QED, finding mild differences with respect to previous studies. These might be relevant for extracting information about the mesons transition form factors, which play an important role in determining the hadronic light-by-light contribution to the anomalous magnetic moment of the muon. *

The radiative corrections to double-Dalitz decays revisited

“…Connection with e + e − → e + e − P production As an extension, this process can be related via crossing symmetry to e + e − → e + e − P production [29] (see Fig. 2), yet bremsstrahlung diagrams need to be recomputed in the appropriate reference frame-that of e + e − .…”