Measurement of Branching Fractions of Singly Cabibbo-suppressed Decays $Λ_c^+ \rightarrow Σ^{0} K^+$ and $Σ^{+} K_{S}^0$

Abstract

Based on a sample of 4.4 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) is measured to be 0.0361 ± 0.0073(stat.) ± 0.0005(syst.), and the ratio of) 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(Λ + c → Σ 0 K + ) and B(Λ + c → Σ + K 0 S ) 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 Λ + c → Σ + K 0 S decay is measured for the first time.

Erratum to: A global analysis of charmless two body hadronic decays for anti-triplet charmed baryons

“…We have now corrected this mistake and the result in table 1 should be changed to channel SU(3) amplitude branching ratio(10 −2 ) α All other the conclusions presented in the paper remain unchanged. The new result is in agreement with BESIII recent data [1].…”