Non-Leptonic two body decays of Charmed and \Lambda_b Baryons

We calculate the two body Cabibbo allowed non-leptonic decays of charmed baryons ${\mathrm{\Lambda }}_c$ and ${\mathrm{\Xi }}_c$ which involve transitions of a heavy quark to a light quark. We use data on the Cabbibo favoured non-leptonic decays $\Lambda_c \rightarrow \Lambda \pi^{+}$and$\Lambda_c \rightarrow \Sigma^{+} \pi^{0 }$ to obtain information on the form factors in the $c\to s$ transition. We also calculate the decay ${\mathrm{\Lambda }}_c\to p\varphi$. Using HQET the information on form factors from the $c\to s$ transition is used to model the form factors in $b\to s$ transition which are then used in the study of ${\mathrm{\Lambda }}_b\to J\mathrm{/}\psi \mathrm{\Lambda }$ decay.