Radiative corrections in K --> 3 pi decays

Simple item page
dc.creatorBissegger, M.
dc.creatorFuhrer, A.
dc.creatorGasser, J.
dc.creatorKubis, B.
dc.creatorRusetsky, A.
dc.date2008-07-03
dc.date.accessioned2026-07-07T11:52:15Z
dc.date.available2026-07-07T11:52:15Z
dc.descriptionWe investigate radiative corrections to K --> 3 pi decays. In particular, we extend the non-relativistic framework developed recently to include real and virtual photons and show that, in a well-defined power counting scheme, the results reproduce corrections obtained in the relativistic calculation. Real photons are included exactly, beyond the soft-photon approximation, and we compare the result with the latter. The singularities generated by pionium near threshold are investigated, and a region is identified where standard perturbation theory in the fine structure constant alpha may be applied. We expect that the formulae provided allow one to extract S-wave pi pi scattering lengths from the cusp effect in these decays with high precision.
dc.description57 pages, 17 figures
dc.identifierhttps://arxiv.org/abs/0807.0515
dc.identifierhttp://arxiv.org/abs/0807.0515
dc.identifierNucl.Phys.B806:178-223,2009
dc.identifierdoi:10.1016/j.nuclphysb.2008.07.027
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204166
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleRadiative corrections in K --> 3 pi decays
dc.typetext

Files

Collections

arXiv