A light scalar X0 or vector X1 particles have been introduced as a possible explanation for the (g-2)μ anomaly and dark matter phenomena. Using (8.998±0.039)×109 J/ψ events collected by the BESIII detector, we search for a light muon philic scalar X0 or vector X1 in the processes J/ψ→μ+μ-X0,1 with X0,1 invisible decays. No obvious signal is found, and the upper limits on the coupling g0,1′ between the muon and the X0,1 particles are set to be between 1.1×10-3 and 1.0×10-2 for the X0,1 mass in the range of 1<1000 MeV/c2 at 90%

Search for a muonphilic scalar X0 or vector X1 via J/ψ →μ+μ-+invisible decays at BESIII

Garzia, I.;Gramigna, S.;
2024

Abstract

A light scalar X0 or vector X1 particles have been introduced as a possible explanation for the (g-2)μ anomaly and dark matter phenomena. Using (8.998±0.039)×109 J/ψ events collected by the BESIII detector, we search for a light muon philic scalar X0 or vector X1 in the processes J/ψ→μ+μ-X0,1 with X0,1 invisible decays. No obvious signal is found, and the upper limits on the coupling g0,1′ between the muon and the X0,1 particles are set to be between 1.1×10-3 and 1.0×10-2 for the X0,1 mass in the range of 1<1000 MeV/c2 at 90%
2024
Ablikim, M.; Achasov, M.  N.; Adlarson, P.; Afedulidis, O.; Ai, X.  C.; Aliberti, R.; Amoroso, A.; An, M.  R.; An, Q.; Bai, Y.; Bakina, O.; Balossino,...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2557011
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