Based on a sample of 4.5 fb-1 of e+e- annihilation data collected in the energy region between 4.6 GeV and 4.7 GeV with the BESIII detector at BEPCII, two singly Cabibbo-suppressed decays Λc+→Sigma0K+ and Λc+→Sigma+KS0 are studied. The ratio of the branching fraction B(Λc+→Sigma0K+) relative to B(Λc+→Sigma0π+) is measured to be 0.0361±0.0073(stat.)±0.0005(syst.), and the ratio of B(Λc+→Sigma+KS0) relative to B(Λc+→Sigma+π+π-) is measured to be 0.0106±0.0031(stat.)±0.0004(syst.). After taking the world-average branching fractions of the reference decay channels, the branching fractions B(Λc+→Sigma0K+) and B(Λc+→Sigma+KS0) are determined to be (4.7±0.9(stat.)±0.1(syst.)±0.3(ref.))×10-4 and (4.8±1.4(stat.)±0.2(syst.)±0.3(ref.))×10-4, respectively. The branching fraction of the Λc+→Sigma+KS0 decay is measured for the first time

Measurement of branching fractions of singly Cabibbo-suppressed decays Λc+ → Σ0K+ and Σ+ KS0

I. Garzia;
2022

Abstract

Based on a sample of 4.5 fb-1 of e+e- annihilation data collected in the energy region between 4.6 GeV and 4.7 GeV with the BESIII detector at BEPCII, two singly Cabibbo-suppressed decays Λc+→Sigma0K+ and Λc+→Sigma+KS0 are studied. The ratio of the branching fraction B(Λc+→Sigma0K+) relative to B(Λc+→Sigma0π+) is measured to be 0.0361±0.0073(stat.)±0.0005(syst.), and the ratio of B(Λc+→Sigma+KS0) relative to B(Λc+→Sigma+π+π-) is measured to be 0.0106±0.0031(stat.)±0.0004(syst.). After taking the world-average branching fractions of the reference decay channels, the branching fractions B(Λc+→Sigma0K+) and B(Λc+→Sigma+KS0) are determined to be (4.7±0.9(stat.)±0.1(syst.)±0.3(ref.))×10-4 and (4.8±1.4(stat.)±0.2(syst.)±0.3(ref.))×10-4, respectively. The branching fraction of the Λc+→Sigma+KS0 decay is measured for the first time
2022
Ablikim, M.; Achasov, M. N.; Adlarson, P.; Albrecht, M.; Aliberti, R.; Amoroso, A.; An, M. R.; An, Q.; Bai, X. H.; Bai, Y.; Bakina, O.; Baldini Ferrol...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2505617
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