Based on a data sample of (10087 ± 44) × 106J/ψ events taken with the BESIII detector, we search for the flavor-changing neutral current charmonium decay J/ψ → D0μ+μ− + c.c. No significant signal above the background is observed, and the upper limit on its branching fraction is set to be ℬ(J/ψ → D0μ+μ− + c.c.) < 1.1 × 10−7 at the 90% confidence level. This marks the first search for a flavor-changing neutral current charmonium decay involving muons in the final state.

Search for the FCNC charmonium decay J/ψ → D0μ+μ− + c.c

Amoroso, A.;Bianchi, F.;Destefanis, M.;De Mori, F.;Greco, M.;Maggiora, M.;Marcello, S.;Sosio, S.;Spataro, S.;
2025-01-01

Abstract

Based on a data sample of (10087 ± 44) × 106J/ψ events taken with the BESIII detector, we search for the flavor-changing neutral current charmonium decay J/ψ → D0μ+μ− + c.c. No significant signal above the background is observed, and the upper limit on its branching fraction is set to be ℬ(J/ψ → D0μ+μ− + c.c.) < 1.1 × 10−7 at the 90% confidence level. This marks the first search for a flavor-changing neutral current charmonium decay involving muons in the final state.
2025
2025
4
1
19
https://link.springer.com/article/10.1007/JHEP04(2025)061
e; +; -e; −; Experiments; Flavour Changing Neutral Currents; Quarkonium; Rare Decay
null, null; Ablikim, M.; Achasov, M. N.; Adlarson, P.; Ai, X. C.; Aliberti, R.; Amoroso, A.; An, Q.; Bai, Y.; Bakina, O.; Ban, Y.; Bao, H.-R.; Batozsk...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/2119132
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