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arXiv · 1912.04512

Resonances in $e^+e^-$ annihilation near 2.2 GeV

The BABAR Collaboration
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Abstract

Using the initial-state radiation method, the $e^+e^- \to K_S K_L$ cross section from 1.98 to 2.54 GeV is measured in a data sample of 469 fb$^{-1}$ collected with the BABAR detector. The results are used in conjunction with previous BABAR results for the $e^+e^- \to K^+ K^-$, $e^+e^- \to \pi^+\pi^-$, $e^+e^- \to \pi^+\pi^-\eta$, and $e^+e^- \to \omega\pi\pi$ cross sections to investigate the nature of the resonance structure recently observed by the BESIII experiment in the $e^+e^- \to K^+ K^-$ cross section.

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The BABAR Collaboration. 2019-12-10. Resonances in $e^+e^-$ annihilation near 2.2 GeV. https://doi.org/10.1103/physrevd.101.012011

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