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First observation of the decay \(Λ^+_c\to nK^{0}_{S}π^+π^0\)

By Besiii Collaboration and others
Based on 4.5 fb\(^{-1}\) of \(e^{+}e^{-}\) collision data accumulated at center-of-mass energies between \(4599.53\) MeV and \(4698.82\) MeV with the BESIII detector, the decay \(\Lambda_{c}^{+}\to nK_{S}^{0}\pi^+\pi^0\) is observed for the first time with a significance of \(9.2\sigma\). The branching fraction is measured to be \((0.85\pm0.13\pm0.03)\%\), where the first uncertainty is... Show more
March 29, 2024
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