Tau decay into ντ and a1(1260), b1(1235), and two K1(1270)

Dai, L.R; Oset, E.; Roca Zamora, Luis

Publication:
Tau decay into ντ and a1(1260), b1(1235), and two K1(1270)

dc.contributor.author	Dai, L.R
dc.contributor.author	Oset, E.
dc.contributor.author	Roca Zamora, Luis
dc.contributor.department	Física
dc.date.accessioned	2025-01-09T15:36:15Z
dc.date.available	2025-01-09T15:36:15Z
dc.date.issued	2020-07-25
dc.description	© The Author(s) 2020. This manuscript version is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by/4.0/. This document is the Published version of a Published Work that appeared in final form in The European Physical Journal C. To access the final edited and published work see https://doi.org/10.1140/epjc/s10052-020-8220-3	es
dc.description.abstract	We study the τ → ντ A decay, with A an axialvector meson. We produce the a1(1260) and b1(1235) resonances in the Cabibbo favored mode and two K1(1270) states in the Cabibbo suppressed mode. We take advantage of previous chiral unitary approach results where these resonances appear dynamically from the vector and pseudoscalar meson interaction in s-wave. Actually two different poles were obtained associated to the K1(1270) quantum numbers. We find that the unmeasured rates for b1(1235) production are similar to those of the a1(1260) and for the two K1 states we suggest to separate the present information on the K¯ ππ invariant masses into K¯ ∗π and ρK modes, the channels to which these two resonances couple most strongly, predicting that these modes peak at different energies and have different widths. These measurements should shed light on the existence of these two K1 states. In addition, we have gone one step further making a comparison with experimental results of three meson decay channels, letting the vector mesons of our approach decay into pseudoscalars, and we find an overall good agreement with experiment.
dc.format	application/pdf	es
dc.format.extent	9
dc.identifier.citation	Eur. Phys. J. C (2020) 80:673
dc.identifier.doi	https://doi.org/10.1140/epjc/s10052-020-8220-3
dc.identifier.issn	Print: 1434-6044
dc.identifier.issn	Electronic: 1434-6052
dc.identifier.uri	http://hdl.handle.net/10201/148149
dc.language	eng	es
dc.relation	LRD acknowledges the support from the National Natural Science Foundation of China (Grant Nos. 11975009, 11575076). This work is partly supported by the Spanish Ministerio de Economia y Competitividad and European FEDER funds under Contracts No. FIS2017-84038-C2-1-P B and No. FIS2017-84038-C2-2-P B. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No.824093 for the STRONG-2020 project.	es
dc.relation.publisherversion	https://link.springer.com/article/10.1140/epjc/s10052-020-8220-3
dc.rights	info:eu-repo/semantics/openAccess	es
dc.rights	Atribución 4.0 Internacional	*
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	*
dc.title	Tau decay into ντ and a1(1260), b1(1235), and two K1(1270)	es
dc.type	info:eu-repo/semantics/article	es
dspace.entity.type	Publication	es