Электронный каталог

Статья

Ablikim, M.
Search for J/*q *> K*0&sub(S)K*0&sub(S) and *q(3686) *> K*0&sub(S)K*0&sub(S) / 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 // Physical Review D. – 2025. – Vol. 112, No. 5. – P. 052010. – URL: https://doi.org/10.1103/wy3d-3v42. – Bibliogr.: 33.

Using data samples of (0087*( 44) × 106 J/ψ events and (2712.4*( 14.3) × 10*6ψ(3686) events collected with the BESIII detector at the BEPCII collider, we search for the CP violating decays J=ψ → K*0&sub(S)K*0&sub(S) and ψ(3686) → K*0&sub(S)K*0&sub(S). No significant signals are observed over the expected background yields. The upper limits on their branching fractions are set as B(J/ψ → K*0&sub(S)K*0&sub(S)) < 4.7 × 10&sup(−9) and B(ψ(3686) →K*0&sub(S)K*0&sub(S)) < 1.1 × 10&sip(−8) at the 90% confidence level. These results improve the previous limits by a factor of three for J/ψ → K*0&siub(S)K*0&sub(S) and two orders of magnitude for ψ(3686) → K*0&subn(S)K*0&sub(S).



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