Электронный каталог

Статья

Ablikim, M.
Observation of *q(3686) *> *L*L^-*n' Decay / M.Ablikim, O.Bakina, I.Boyko, G.Chelkov, D.Dedovich, I.Denysenko, P.Egorov, A.Guskov, Y.Nefedov, A.Sarantsev, A.Zhemchugov, [a.o.] // Physical Review D [Electronic resource]. – 2023. – Vol.108, No.11. – P. 112014. – URL: https://doi.org/10.1103/PhysRevD.108.112014. – Bibliogr.:38.

Using a sample of (27.12±0.14)×108  ψ(3686) events collected with the BESIII detector, the decay ψ(3686)→Λ¯Λη′ with η′ subsequently decaying into γπ+π− and ηπ+π− is observed for the first time. The branching fraction of ψ(3686)→Λ¯Λη′ is measured to be (7.34±0.94(stat)±0.43(sys))×10−6. No resonant structures are evident in the Λη′, ¯Λη′ and Λ¯Λ mass spectra.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 332.7 - Встречные е+е- и мю+мю- пучки
Спец.(статьи,препринты) = С 346.6 - Резонансы и новые частицы