On the $Λ^+_c$ -> p + K^- + $π^+$ decay

Abstract

The proton energy spectrum and the angular distribution of the probability of the $Λ^+_c$ -> p + $K^-$ + $π^+$ decay for the polarized $Λ^+_c$ and the unpolarized proton are calculated in the effective quark model with chiral U(3) X U(3) symmetry incorporating Heavy Quark Effective theory (HQET) and Chiral perturbation theory at the quark level (CHPT)$_q$. The application of the obtained result to the analysis of the polarization of the $Λ^+_c$ produced in the processes of photo and hadroproduction is discussed. We draw the similarity between the measurements of the polarization of the $Λ^+_c$ in the $Λ^+_c$ -> p + $K^-$ + $π^+$ decay and the $μ^-$--meson in the $μ^-$ -> $e^-$ + $\barν_e$ + $ν_μ$ decay.