Электронный каталог

Статья

Ablikim, M.
Observation of *c&sub(c,J)(J=0,1,2) *> pp^-*h*h / M.Ablikim, O.Bakina, I.Boyko, G.Chelkov, D.Dedovich, I.Denysenko, P.Egorov, A.Guskov, Y.Nefedov, A.Sarantsev, A.Zhemchugov, [a.o.]. – Text : electronic // Journal of High Energy Physics. – 2025. – Vol. 2025, No. 10. – P. 090. – URL: https://doi.org/10.1007/JHEP10(2025)090. – Bibliogr.: 40.

Using (2712.4 ± 14.3) × 10*6 ψ(3686) candidates collected by the BESIII detector operating at the BEPCII storage ring, the decays *c&sub(cJ)(J=0,1,2) *> pp^-*h*h are observed for the first time through the radiative transition ψ(3686) → γ*ckl&sub(cJ). The statistical significances for *c&sub(cJ) signals are all larger than 5σ. The branching fractions of *c&sub(c0,1,2) *> pp^-*h*h are determined to be (5.75 ± 0.59 ± 0.42) × 10&sup(−5), (1.40 ± 0.33 ± 0.17) × 10&sup(−5), and (2.64 ± 0.40 ± 0.27) × 10&sup(−5), respectively, where the first uncertainties are statistical and the second systematic. No evident resonant structures are found in the pp^- and p*h/p^-*h systems.



ОИЯИ = ОИЯИ (JINR)2025