Search for invisible decays of a dark photon using $e^{+}{e}^{-}$ annihilation data at BESIII

Abstract

We report a search for a dark photon using $14.9$~fb${}^{-1}$ of $e^{+}{e}^{-}$ annihilation data taken at center-of-mass energies from 4.13 to 4.60~GeV with the BESIII detector operated at the BEPCII storage ring. The dark photon is assumed to be produced in the radiative annihilation process of $e^{+}{e}^{-}$ and to predominantly decay into light dark matter particles, which escape from the detector undetected. The mass range from 1.5 to 2.9~GeV is scanned for the dark photon candidate, and no significant signal is observed. The mass dependent upper limits at the 90$\%$ confidence level on the coupling strength parameter $\epsilon$ for a dark photon coupling with an ordinary photon vary between $1.6\times 10^{-3}$ and $5.7\times 10^{-3}$.

8 pages, 3 figures

References in corpus (12)

• Observation of an anomalous positron abundance in the cosmic radiation
• A Theory of Dark Matter
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
• Secluded WIMP Dark Matter
• U-boson production in e+e- annihilations, psi and Upsilon decays, and Light Dark Matter
• Study of the decay K+ => pi+,nu,nubar in the momentum region 140<Ppi<199 MeV/c
• New Limits on Hidden Photons from Past Electron Beam Dumps
• Probing Dark Forces and Light Hidden Sectors at Low-Energy e+e- Colliders
• Matching perturbative and Parton Shower corrections to Bhabha process at flavour factories
• Search for invisible decays of sub-GeV dark photons in missing-energy events at the CERN SPS
• Measurement of integrated luminosities at BESIII for data samples at center-of-mass energies between 4.0 and 4.6 GeV
• Trigger efficiencies at BES III

Cited by in corpus (7)

• Two is better than one: The U-spin-CP anomaly in charm
• Wess-Zumino-Witten Interactions of Axions
• Search for the massless dark photon with $D^0\to \omega {\gamma }^{\prime }$ and $D^0\to \gamma {\gamma }^{\prime }$
• New Physics Searches via Beam Normal Spin Asymmetry in Bhabha Scattering
• Isospin violating decays of vector charmonia
• Search for sub-GeV invisible particles in inclusive decays of $J/\psi$ to $\varphi$
• Characterizing Dark Bosons at Chiral Belle