Description of the decay τ →Kππντ in the NJL-type chiral quark model
Volkov M.K. Pivovarov A.A. Nurlan K.
1 June 2023American Physical Society
Physical Review D
2023#107Issue 11
The branching fractions of the decays τ-→K-π+π-ντ, τ-→K-π0π0ντ, and τ-→K̄0π-π0ντ are calculated in the U(3)×U(3) Nambu-Jona-Lasinio-type chiral model. Four intermediate channels are considered: the contact channel and the channels with the intermediate axial-vector, vector, and pseudoscalar mesons. The additional resonance states K∗π and Kρ are taken into account in all channels. We show that the main contributions to the widths of these decays are given by the axial-vector channel. In the axial-vector channel, the intermediate resonances K1(1270) and K1(1400) are taken into account. The obtained results are in satisfactory agreement with the known experimental data.
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Bogoliubov Laboratory of Theoretical Physics, Jinr, Moscow Region, Dubna, 141980, Russian Federation
The Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
L. N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Bogoliubov Laboratory of Theoretical Physics
The Institute of Nuclear Physics
L. N. Gumilyov Eurasian National University
10 лет помогаем публиковать статьи Международный издатель
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