Электронный каталог

Статья

Ablikim, M.
Measurement of the Absolute Branching Fraction of the Inclusive Decay *L^-*-&sub(c)*>n^-+X / 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.108, No.3. – P.L031101. – URL: https://doi.org/10.1103/PhysRevD.108.L031101. – Bibliogr.:26.

Based on e+e− collision data corresponding to an integrated luminosity of 4.5  fb−1 collected at the center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII, the absolute branching fraction of the inclusive decay ¯Λ−c→¯n+X, where X refers to any possible final state particles, is measured. The absolute branching fraction is determined to be B(¯Λ−c→¯n+X)=(32.4±0.7±1.5)%, where the first uncertainty is statistical and the second systematic. Assuming CP symmetry, the measurement indicates that about one fourth of Λ+c (¯Λ−c) decay modes with a neutron (an antineutron) in the final state have not been observed.



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