Электронный каталог

Статья

Ganbold, G.
Strong Decays of Charmonium-Like State Y(4230) / G.Ganbold, M.A.Ivanov // The European Physical Journal A [Electronic resource]. – 2024. – Vol. 60, No. 1. – P. 13. – URL: https://doi.org/10.1140/epja/s10050-024-01234-5. – Bibliogr.: 34.

Strong decays of the charmonium-like state Y (4320) have been studied in the framework of the covariant confined quark model. The resonance Y has been interpreted as a four-quark state with molecular-type interpolating current. We evaluate the hidden-charm decay width of Y into a vector and a scalar, with the latter decaying subsequently to a pair of charged pseudoscalar states. The strong decay mode Y → π*+π*- J/*Q has been studied by involving the scalar resonances f&sub(0)(500) and f0(980), considered quark-antiquark states, while the mode Y → K*+K*-J/*Q-via f&sub(0)(980). We have calculated the partial widths of the related strong decays and the branching ratio B(Y → K*+K*- J/*Q)/B(Y → π*+π*- J/*Q), recently determined by the BESIII collaboration. The estimated branching ratio and calculated partial strong decay widths are in reasonable agreement with the latest experimental data.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 346.6д1 - Чармоний, боттомоний, топ-кварк. Очарованные частицы и др. резонансы из тяжелых кварков
Бюллетени = 22/024