Based on a data sample corresponding to an integrated luminosity of 6.4 fb−1 of e+e− annihilation and collected with the BESIII detector at 13 center-of-mass energy points ranging between 4.600 GeV and 4.950 GeV, we report the first observation of the singly Cabibbo-suppressed decay Λc+→Σ0KS0π+ with a statistical significance of 5.9σ. The branching fraction is determined to be BΛc+→Σ0KS0π+=0.58±0.14stat.±0.04syst.×10−3. In addition, the decay Λc+→Σ0KS0K+ has also been investigated, and the evidence for this decay is obtained with a statistical significance of 3.7σ.
Measurements of branching fractions of $$ {\Lambda}_c^{+}\to {\Sigma}^0{K}_S^0{\pi}^{+} $$ and $$ {\Lambda}_c^{+}\to {\Sigma}^0{K}_S^0{K}^{+} $$
Garzia, I.;Melendi, F. M.;
2026
Abstract
Based on a data sample corresponding to an integrated luminosity of 6.4 fb−1 of e+e− annihilation and collected with the BESIII detector at 13 center-of-mass energy points ranging between 4.600 GeV and 4.950 GeV, we report the first observation of the singly Cabibbo-suppressed decay Λc+→Σ0KS0π+ with a statistical significance of 5.9σ. The branching fraction is determined to be BΛc+→Σ0KS0π+=0.58±0.14stat.±0.04syst.×10−3. In addition, the decay Λc+→Σ0KS0K+ has also been investigated, and the evidence for this decay is obtained with a statistical significance of 3.7σ.File in questo prodotto:
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