Speaker
Description
From polarised Deep Inelastic scattering (DIS) asymmetries, and cross-section data, it is possible to extract the polarized structure functions $g_1$ and $g_2$. In the parton model picture of proton, the structure function $g_1^p$ is expressed in terms of $g_1^p = \Delta \Sigma + \Delta G$, the net quark and gluon helicity contributions to the proton spin. This spin structure function can also be used to understand the controversies associated with the sign problem of $\Delta G$. We present a rigorous approach to study the correlations between the spin structure function $g_1$ with $\Delta \Sigma$ and $\Delta G$. A likelihood analysis of the polarized DIS spin structure function data using Markov chain Monte Carlo (MCMC) sampling method is performed. The analysis shows preliminary results with a detailed explanation of the method employed.
