Электронный каталог

Статья

Ablikim, M.
Measurement of Branching Fractions of *L*+&sub(c) Decays to *S*+K*+K*-, *S*+*f and *S*+K*+*p*-(*p*0) / 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.] // Journal of High Energy Physics [Electronic resource]. – 2023. – Vol.2023, No.9. – P.125. – URL: https://doi.org/10.1007/JHEP09(2023)125. – Bibliogr.:61.

Based on 4.5 fb−1 data taken at seven center-of-mass energies ranging from 4.600 to 4.699 GeV with the BESIII detector at the BEPCII collider, we measure the branching fractions of → Σ+ + hadrons relative to → Σ+π+π−. Combining with the world average branching fraction of → Σ+π+π−, their branching fractions are measured to be (0.377 ± 0.042 ± 0.020 ± 0.021)% for → Σ+K+K−, (0.200 ± 0.023 ± 0.011 ± 0.011)% for → Σ+K+π−, (0.414 ± 0.080 ± 0.030 ± 0.023)% for → Σ+ϕ and (0.197 ± 0.036 ± 0.009 ± 0.011)% for → Σ+K+K−(non-ϕ). In all the above results, the first uncertainties are statistical, the second are systematic and the third are from external input of the branching fraction of → Σ+π+π−. Since no signal for → Σ+K+π−π0 is observed, the upper limit of its branching fraction is determined to be 0.13% at the 90% confidence level.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 332.7 - Встречные е+е- и мю+мю- пучки
Спец.(статьи,препринты) = С 324.1в - Слабые взаимодействия. Теория Вайнберга- Салама и ее модификации$