Quark model relations for b-baryon decay

Abstract

Properties of b-baryon decay matrix elements (amplitudes) have been derived in a nonsymmetric quark model without any use of SU(6), SU(3), or SU(2) (isotopic spin) groups. Equalities between pairs of amplitudes are derived, and $\Lambda -\Sigma$ mixing is used to calculate the branching ratio for the transition ${\Lambda }_b\to {\Sigma }^0$.

Comments: The derivation has been simplified