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.
2026
Null, Null; Ablikim, M.; Achasov, M. N.; Adlarson, P.; Ai, X. C.; Akondi, C. S.; Aliberti, R.; Amoroso, A.; An, Q.; An, Y. H.; Bai, Y.; Bakina, O.; Ba...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2634812
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