The ${\Lambda }_b\to pl\bar{\nu }$ decay in perturbative QCD

Hsien-Hung Shih, Shih-Chang Lee, Hsiang-nan Li

We develop perturbative QCD factorization theorems for the exclusive semileptonic heavy baryon decay ${\Lambda }_b\to pl\bar{\nu }$, in which the relevant hadronic form factor is expressed as…