Cusps in K_L --> 3 pi decays

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dc.creatorBissegger, M.
dc.creatorFuhrer, A.
dc.creatorGasser, J.
dc.creatorKubis, B.
dc.creatorRusetsky, A.
dc.date2007-10-24
dc.date.accessioned2026-07-07T11:53:46Z
dc.date.available2026-07-07T11:53:46Z
dc.descriptionThe pion mass difference generates a pronounced cusp in K --> 3 pi decays, the strength of which is related to the pi pi S-wave scattering lengths. We apply an effective field theory framework developed earlier to evaluate the amplitudes for K_L --> 3 pi decays in a systematic manner, where the strictures imposed by analyticity and unitarity are respected automatically. The amplitudes for the decay eta --> 3 pi are also given.
dc.description15 pages, 3 figures, uses Elsevier style
dc.identifierhttps://arxiv.org/abs/0710.4456
dc.identifierhttp://arxiv.org/abs/0710.4456
dc.identifierPhys.Lett.B659:576-584,2008
dc.identifierdoi:10.1016/j.physletb.2007.11.008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204657
dc.subjectHigh Energy Physics - Phenomenology
dc.titleCusps in K_L --> 3 pi decays
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