Measurement of branching fractions of ${\Lambda }_c^{+}$ decays to ${\Sigma }^{+}{K}^{+}{K}^{-}$, ${\Sigma }^{+}\varphi$ and ${\Sigma }^{+}{K}^{+}{\pi }^{-}({\pi }^0)$

Abstract

Based on 4.5 fb${}^{-1}$ data taken at seven center-of-mass energies ranging from 4.600 to 4.699 GeV with the BESIII detector at the BEPCII collider, we measure the branching fractions of ${\Lambda }_c^{+}\to {\Sigma }^{+}+hadrons$ relative to ${\Lambda }_c^{+}\to {\Sigma }^{+}{\pi }^{+}{\pi }^{-}$. Combining with the world average branching fraction of ${\Lambda }_c^{+}\to {\Sigma }^{+}{\pi }^{+}{\pi }^{-}$, their branching fractions are measured to be $(0.377\pm 0.042\pm 0.018\pm 0.021)\%$ for ${\Lambda }_c^{+}\to {\Sigma }^{+}{K}^{+}{K}^{-}$, $(0.200\pm 0.023\pm 0.010\pm 0.011)\%$ for ${\Lambda }_c^{+}\to {\Sigma }^{+}{K}^{+}{\pi }^{-}$, $(0.414\pm 0.080\pm 0.029\pm 0.023)\%$ for ${\Lambda }_c^{+}\to {\Sigma }^{+}\varphi$ and $(0.197\pm 0.036\pm 0.008\pm 0.011)\%$ for ${\Lambda }_c^{+}\to {\Sigma }^{+}{K}^{+}{K}^{-}$(non-$\varphi$). In all the above results, the first uncertainties are statistical, the second are systematic and the third are from external input of the branching fraction of ${\Lambda }_c^{+}\to {\Sigma }^{+}{\pi }^{+}{\pi }^{-}$. Since no signal for ${\Lambda }_c^{+}\to {\Sigma }^{+}{K}^{+}{\pi }^{-}{\pi }^0$ is observed, the upper limit of its branching fraction is determined to be 0.11\% at the 90$\%$ confidence level.

References in corpus (3)

• Method for detector description transformation to Unity and application in BESIII
• Charmed Baryon Physics Circa 2021
• Study of the Standard Model with weak decays of charmed hadrons at BESIII

Cited by in corpus (3)

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• Nonleptonic three-body charmed baryon weak decays with H(15)
• Topological amplitudes of charmed baryon decays in the $SU(3{)}_F$ limit