The semileptonic $B_s$ and ${\Lambda }_b$ widths

Abstract

We present estimates of the semileptonic widths of the $B_s$ and ${\Lambda }_b$ hadrons. We employ the latest fit to the $B$ inclusive semileptonic data, the heavy quark expansion and lattice QCD results. Our results suffer from large uncertainties that could be reduced with dedicated measurements and new lattice QCD calculations.

Comments: Contribution to the 11th International Workshop on the CKM Unitarity Triangle (CKM2021)