Электронный каталог

Статья

Ablikim, M.
Search for the Weak Radiative Decay *L*+&sub(c) *> *S*+*g at BESIII / M.Ablikim, O.Bakina, I.Boyko, G.Chelkov, D.Dedovich, I.Denysenko, P.Egorov, A.Guskov, Y.Nefedov, S.Pogodin, A.Sarantsev, A.Zhemchugov, [a.o.] // Physical Review D [Electronic resource]. – 2023. – Vol.107, No.5. – P.052002. – URL: https://doi.org/10.1103/PhysRevD.107.052002. – Bibliogr.:38.

The Cabibbo-allowed weak radiative decay Λ+c→Σ+γ has been searched for in a sample of Λ+c¯Λ−c pairs produced in e+e− annihilations, corresponding to an integrated luminosity of 4.5  fb−1 collected with the BESIII detector at center-of-mass energies between 4.60 and 4.70 GeV. No excess of signal above background is observed, and we set an upper limit on the branching fraction of this decay to be B(Λ+c→Σ+γ)<4.4×10−4 at a confidence level of 90%, which is in agreement with Standard Model expectations.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 332.7 - Встречные е+е- и мю+мю- пучки
Бюллетени = 40/023