Inconsistency of the data on the K1(1270)→πK0⁎(1430) decay width

We show, using the same Lagrangian for the K(1270)→πK(1430) and K(1430)→K(1270)π decays, that the present PDG data on the partial decay width of K(1270)→πK(1430) implies a width for K(1430)→K(1270)π decay which is about one order of magnitude larger than the total K(1430) width. A discussion on this...

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Detalles Bibliográficos
Autores: Roca, Luis, Liang, W.H., Oset, Eulogi
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/336365
Acceso en línea:http://hdl.handle.net/10261/336365
Access Level:acceso abierto
Descripción
Sumario:We show, using the same Lagrangian for the K(1270)→πK(1430) and K(1430)→K(1270)π decays, that the present PDG data on the partial decay width of K(1270)→πK(1430) implies a width for K(1430)→K(1270)π decay which is about one order of magnitude larger than the total K(1430) width. A discussion on this inconsistency is done, stressing its relationship to the existence of two K(1270) states obtained with the chiral unitary theory, which are not considered in the experimental analyses of Kππ data.