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fitter is utilized to improve the measured precision. Among the measurements for twelve Λ decay mode j, the ST yield is determined to bewhereis the total number of produced Λ where ε ij is the efficiency for simultaneously reconstruct- Because of the large acceptance of the BESIII detec-182 tor and the low multiplicities of Λ c hadronic decays, whereis the average DT efficiency

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We report the first direct measurement of decays of the Λ + c baryon involving the neutron. The 118 analysis is performed using 567 pb −1 of e + e − collision data collected at √ s = 4.599 GeV with the BESIII detector at the BEPCII collider. We observe the decay Λ 188The BESIII detector is a cylindrical detector with a solid-angle coverage of 93% of 4π that operates at the

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