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arxiv: 2105.11768 · v1 · pith:2PHR53V7new · submitted 2021-05-25 · ✦ hep-ph

Inconsistency of the data on the K₁(1270) to π K^*₀(1430) decay width

classification ✦ hep-ph
keywords widthdatadecayinconsistencyanalyseschiralconsidereddecays
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We show, using the same Lagrangian for the $K_1(1270) \to \pi K^*_0(1430)$ and $K^*_0(1430) \to K_1(1270) \pi$ decays, that the present PDG data on the partial decay width of $K_1(1270) \to \pi K^*_0(1430)$ implies a width for $K^*_0(1430) \to K_1(1270) \pi$ decay which is about ten times larger than the total $K^*_0(1430)$ width. A discussion on this inconsistency is done, stressing its relationship to the existence of two $K_1(1270)$ states obtained with the chiral unitary theory, which are not considered in the experimental analyses of $K\pi\pi$ data.

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