• Letter
  • Open Access

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

M. Ablikim et al. (BESIII Collaboration)
Phys. Rev. D 109, L031102 – Published 14 February 2024

Abstract

A light scalar X0 or vector X1 particles have been introduced as a possible explanation for the (g2)μ anomaly and dark matter phenomena. Using (8.998±0.039)×109J/ψ events collected by the BESIII detector, we search for a light muon philic scalar X0 or vector X1 in the processes J/ψμ+μX0,1 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 1.1×103 and 1.0×102 for the X0,1 mass in the range of 1<M(X0,1)<1000MeV/c2 at 90% credibility level.

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  • Received 3 November 2023
  • Revised 14 December 2023
  • Accepted 25 January 2024

DOI:https://doi.org/10.1103/PhysRevD.109.L031102

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

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Vol. 109, Iss. 3 — 1 February 2024

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