Электронный каталог

Статья

Volkov, M.K.
Decays *t*>f&sub(0)(*p,K)*n&sub(*t) and *t*>3*p*n&sub(*t) Accounting for the Contribution of f&sub(0)(500) / M.K.Volkov, A.A.Pivovarov, K.Nurlan. – Text: electronic // The European Physical Journal A. – 2025. – Vol. 61, No. 3. – P. 66. – URL: https://doi.org/10.1140/epja/s10050-025-01531-7. – Bibliogr.: 64.

In the U(3) × U(3) quark NJL model, τ lepton decays with the production of scalar mesons f&sub(0)(π, K) and neutrinos are studied, where f&sub(0) = f&sub(0)(500), f&sub(0)(980). It is shown that these decays mainly occur via contact channels and channels with axial-vector mesons a&sub(1)(1260), K&sub(1)(1270) and K&sub(1)(1400). All mesons are considered as quark-antiquark states in this case. The obtained results can be considered as predictions for future experiments. The obtained estimates for the branching fractions of the τ → π−2π*0ν&sub(τ) decay taking into account the contributions of the ρπ and f&sub(0)(500)π states are in satisfactory agreement with experimental data.



ОИЯИ = ОИЯИ (JINR)2025