Semileptonic decays of $\Lambda_b$ baryons in the relativistic quark model

Understand

Semileptonic $\Lambda_b$ decays are investigated in the framework of the relativistic quark model based on the quasipotential approach and the quark-diquark picture of baryons.

• The decay form factors are expressed through the overlap integrals of the initial and final baryon wave functions.
• All calculations are done without employing nonrelativistic and heavy quark expansions.
• The momentum transfer dependence of the decay form factors is explicitly determined in the whole accessible kinematical range without any extrapolations or model assumptions.