Probing new physics scenarios of muon $g-2$ via $J/\psi$ decay at BESIII

Abstract

The disagreement between the standard model prediction and the experimental measurement of muon anomalous magnetic moment can be alleviated by invoking an additional particle which is either a vector boson ($X_1$) or a scalar ($X_0$). This new particle, with the mass $m_X\lesssim 2m_{\mu }$, can be searched for in the decay $J/\psi \to {\mu }^{-}{\mu }^{+}X$, where $X$ is missing. Our numerical study shows that the search is quite feasible at the BESIII experiment in the parameter space allowed by muon $g-2$ measurements.

arXiv comment16 pages, 10 figures, 2 tables, References updated

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Cited by in corpus (4)

• Confirming $U(1{)}_{L_{\mu }-L_{\tau }}$ as a solution for $(g-2{)}_{\mu }$ with neutrinos
• Neutrino Masses, Leptonic Flavor Mixing and Muon $(g-2)$ in the Seesaw Model with the $U(1{)}_{L_{\mu }^{}-L_{\tau }^{}}^{}$ Gauge Symmetry
• Lattice-motivated QCD coupling and hadronic contribution to muon $g-2$
• Methodology to determine the spin-parity of muon-philic $X$ boson in $J/\psi \to {\mu }^{-}{\mu }^{+}X$ decay