Peilian Li (USTC)
The BESIII detector accumulated 567 pb-1 data at the center-of-mass energy of 4.599 GeV, which is the world's largest e+e- collision sample at the Lambda_c pair threshold. By analyzing this data sample, we report the determinations of the absolute branching fractions of the Lambdac+ semi-leptonic decay into Lambdac e+v, and 12 hadrnoic decays of pKs, pK-pi+, pKspi0, pKspi+pi-, Lambda pi+, Lambda pi+pi0, Lambda pi+pi+pi-, pK-pi+pi0, Sigma0 pi+, Sigma+pi0, Sigma+pi+pi- and Sigma+omega. The precisions of the absolute branching fractions for these decays are improved significantly compared to the PDG values.
Shuangshi Fang (Instittute of High Energy physics)