Isgur–Wise function for the semileptonic decay of \(\Lambda _b\) baryon

Abstract

The Isgur–Wise function for the semileptonic decay of \(\Lambda _b\) baryon is studied in the framework of the Hypercentral Constituent Quark Model. The six-dimensional hyperradial Schrödinger equation is solved in the variational approach to get masses and wavefunctions of heavy baryons. The obtained Isgur–Wise function is compared with the other theoretical work. The slope (\(\rho ^2\)) of the Isgur–Wise function is determined and it is found that the computed slope (\(\rho ^2\)) of the Isgur–Wise function is in accordance with other theoretical predictions and with the available experimental observations.