Электронный каталог

Статья

Ablikim, M.
Measurement of the Cross Section of e*+e*-*>*X*-*X^-*+ at Center-of-Mass Energies Between 3.510 and 4.843 GeV / 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.11. – P.228. – URL: https://doi.org/10.1007/JHEP11(2023)228. – Bibliogr.:74.

Using e+e− collision data corresponding to a total integrated luminosity of 12.9 fb−1 collected with the BESIII detector at the BEPCII collider, the exclusive Born cross sections and the effective form factors of the reaction are measured via the single baryon-tag method at 23 center-of-mass energies between 3.510 and 4.843 GeV. Evidence for the decay is observed with a significance of 4.5σ by analyzing the measured cross sections together with earlier BESIII results. For the other charmonium(-like) states ψ(4040), ψ(4160), Y(4230), Y(4360), ψ(4415), and Y(4660), no significant signal of their decay to is found. For these states, upper limits of the products of the branching fraction and the electronic partial width at the 90% confidence level are provided.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 332.7 - Встречные е+е- и мю+мю- пучки
Спец.(статьи,препринты) = С 324.1д - Квантовая хромодинамика$