https://doi.org/10.1140/epja/s10050-023-01065-w
Regular Article - Theoretical Physics
Decays 
in the 
quark NJL model
1
Bogolubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980, Dubna, Russia
2
Institute of Nuclear Physics, 050032, Almaty, Kazakhstan
3
Eurasian National University, 010008, Astana, Kazakhstan
Received:
16
May
2023
Accepted:
23
June
2023
Published online:
29
July
2023
The widths of the decays 
and 
are calculated in the chiral quark NJL model. Four channels are considered: contact, axial vector, vector, and pseudoscalar channels. It is shown that the dominant contribution is given by the axial vector channel with an intermediate 
meson. The results obtained are in satisfactory agreement with the experimental data.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
