Based on a sample of (10087 ± 44) × 106J/ψ events collected at the center-of-mass energy s=3.0969 GeV with the BESIII detector, we search for the charmonium rare weak decay J/ψ→D¯0K¯∗0+c.c. No significant signal is observed, and the upper limit on its decay branching fraction at the 90% confidence level is set as 1.4 × 10−7, improving the sensitivity of the previous best limit by an order of magnitude.
Search for the charmonium weak decay J/ψ → (D)over-bar0(K)over-bar*0 + c.c.
Garzia, I.;Melendi, F. M.;
2026
Abstract
Based on a sample of (10087 ± 44) × 106J/ψ events collected at the center-of-mass energy s=3.0969 GeV with the BESIII detector, we search for the charmonium rare weak decay J/ψ→D¯0K¯∗0+c.c. No significant signal is observed, and the upper limit on its decay branching fraction at the 90% confidence level is set as 1.4 × 10−7, improving the sensitivity of the previous best limit by an order of magnitude.File in questo prodotto:
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