Shourong Zhao

Discrete Space-Time Scalar Field: A Unified Model of Dark Energy and Dark Matter

Shourong Zhao

In this paper, we propose to build a system of classical field equations compatible with general relativity by constructing a discrete space-time scalar field. The theory interprets dark energy as the space-time lattice potential V(φ), and dark matter as the scalar field …

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Study of light scalar mesons through $D_s^+ \to π^0 π^0 e^+ ν_e$ and $K_S^0 K_S^0 e^+ ν_e$ decays

BESIII Collaboration, М. Н. Ачасов, P. Adlarson, S. Ahmed et autres

Using 6.32~fb$^{-1}$ of $e^+e^-$ collision data recorded by the BESIII detector at center-of-mass energies between $4.178$ to $4.226$ GeV, we present the first measurement of the decay $D_s^+\to f_0(980)e^+ν_e,\,f_0(980)\to π^0π^0$. The product branching fraction of $D_s^+\to f_0(980)e^+ν_e,\,f_0(980)\to π^0π^0$ is measured to be …