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arXiv · 1605.08896

Isgur-Wise function and a new approach to Potential Model

Tapashi Das·D. K. Choudhury·K. K. Pathak
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Abstract

Considering the Cornell potential $V(r)=-\frac{4\alpha_s}{3r}+br+c$, we have revisited the Dalgarno's method of perturbation by incorporating two scales $r^{short}$ and $r^{long}$ as integration limit so that the perturbative procedure can be improved in a potential model. With the improved version of the wave function the ground state masses of the heavy-light mesons $ D, D_s, B, B_s$ and $B_c $ are computed. The slopes and curvatures of the form factors of semi-leptonic decays of heavy-light mesons in both HQET limit and finite mass limit are calculated and compared with the available data.

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Tapashi Das, D. K. Choudhury, K. K. Pathak. 2016-05-28. Isgur-Wise function and a new approach to Potential Model. https://doi.org/10.1142/s0217751x1650189x

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