Электронный каталог

Статья

Ganbold, G.
Isospin Symmetry Violation in the Strong Decays of the Spin-2 Exotic State X&sub(2)(4014) / G.Ganbold // Физика элементарных частиц и атомного ядра. – 2026. – Т. 57, № 5. – P. 930. – URL: https://www1.jinr.ru/Pepan/v-57-5/09_Ganbold_ann.pdf.

The isospin violation in the strong decays of the spin-2 exotic charmonium-like state X&sub(2)(4014) has been studied within the framework of the covariant confined quark model. We have interpreted the exotic hadron X&sub(2) as a four-quark state with a (D&sup(∗ )D&sub(∗ ) ) molecular-type interpolating quark current and computed the leading-order strong decay widths at the level of two-petal quark-loop diagrams. The partial widths of the decay modes into channels *w J/*q and r&sup(0) J/*q, as well as their branching ratio recently discussed in literature, have been calculated and analyzed. In the comparison of our approach to the recent (D&sup(∗ ) D&sup(∗ ) ) molecular scenarios, we have shown the explicit appearance of the threshold effect in the latter models. The calculated partial strong decay widths and their branching ratio are in reasonable agreement with the latest experimental data.



Спец.(статьи,препринты) = С 324.1д - Квантовая хромодинамика$
Спец.(статьи,препринты) = С 346.6д1 - Чармоний, боттомоний, топ-кварк. Очарованные частицы и др. резонансы из тяжелых кварков
ОИЯИ = ОИЯИ (JINR)2026