Реферат: The rates of the Xð3872Þ → π0π0χc1 and Xð3872Þ → πþπ−χc1 decays are estimated in the model of the triangle loop diagrams with charmed DDD¯ and D¯ DD¯ mesons in the loops. There are the triangle logarithmic singularities in the physical region of the Xð3872Þ → π0π0χc1 decay which manifest themselves as narrow peaks in the π0χc1 mass spectrum near the D0D¯ 0 threshold. The model predicts approximately the same branching fractions of the Xð3872Þ → π0π0χc1 and Xð3872Þ → πþπ−χc1 decays at the level of about ð0.8–1.7Þ × 10−4. A distinct prediction of the model is the value of the ratio R ¼ BðXð3872Þ → πþπ−χc1Þ=BðXð3872Þ → π0π0χc1Þ ≈ 1.1. It weakly depends on the Xð3872Þ resonance parameters and indicates a significant violation of the isotopic symmetry according to which one would expect R ¼ 2.

Библиографическая ссылка: Achasov N.N. , Shestakov G.N.
Tentative estimates of B(X(3872) → π0π0χ c1) and B(X(3872) → π + π − χ c1)
Physical Review D: Particles and fields. 2024. V.110. N01. 016023 :1-9. DOI: 10.1103/PhysRevD.110.016023 WOS Scopus РИНЦ OpenAlex

Даты:

Поступила в редакцию:	15 мая 2024 г.
Принята к публикации:	26 июн. 2024 г.
Опубликована в печати:	24 июл. 2024 г.
Опубликована online:	24 июл. 2024 г.

Идентификаторы БД:

Web of science:	WOS:001277698700003
Scopus:	2-s2.0-85199570050
РИНЦ:	73605966
OpenAlex:	W4400949363

Цитирование в БД:

БД	Цитирований
OpenAlex	3
Scopus	3
Web of science	4
РИНЦ	2

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