Yayınlanmış 1 Ocak 2019 | Sürüm v1
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Cross section measurements of ${e}^{+}{e}^{-}\to {K}^{+}{K}^{-}{K}^{+}{K}^{-}$ and $\varphi {K}^{+}{K}^{-}$ at center-of-mass energies from 2.10 to 3.08 GeV

Oluşturanlar

  • 1. CERN

Açıklama

We measure the Born cross sections of the process ${e}^{+}{e}^{-}\to {K}^{+}{K}^{-}{K}^{+}{K}^{-}$ at center-of-mass (c.m.) energies, $\sqrt{s}$, between 2.100 and 3.080 GeV. The data were collected using the BESIII detector at the BEPCII collider. An enhancement at $\sqrt{s}=2.232\text{}\text{}\mathrm{GeV}$ is observed, very close to the ${e}^{+}{e}^{-}\to \Lambda \overline{\Lambda }$ production threshold. A similar enhancement at the same c.m. energy is observed in the ${e}^{+}{e}^{-}\to \varphi {K}^{+}{K}^{-}$ cross section. The energy dependence of the ${K}^{+}{K}^{-}{K}^{+}{K}^{-}$ and $\varphi {K}^{+}{K}^{-}$ cross sections differs significantly from that of ${e}^{+}{e}^{-}\to \varphi {\pi }^{+}{\pi }^{-}$.

Dosyalar

PhysRevD.100.032009.pdf

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md5:3084d296c3e75bb69ecab770e84c5516
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