Speaker
Bai-Cian Ke
(Carnegie Mellon University)
Description
As the lightest and most common example, the $Λ^+_c$ plays a key role in our understanding of the charmed baryons. The BESIII detector has collected a sample of 597 pb$^{−1}$ of $e^+ e^−$ annihilation data near $Λ^+_c \bar{\Lambda}^-_c$ threshold. Using a double-tag technique, we make absolute measurements of twelve Cabibbo-favored $Λ^+_c$ hadronic decay modes, including the golden reference mode, $pK^− π^ +$, for which we find $B(Λ^+_c → pK^- π^+ ) =$ (5.84 ± 0.27(stat) ± 0.23(syst))%. We also determine $B(Λ^+_c → Λe^+ ν_e ) =$ (3.63 ± 0.38(stat) ± 0.20(syst))%. Preliminary results for other final states, including $nK_S π^+$, will also be presented, along with future prospects.
Author
Bai-Cian Ke
(Carnegie Mellon University)
