4 research outputs found
An analysis of the Isgur-Wise Function and its derivatives within a Heavy-Light QCD Quark Model
In determining the mesonic wave function from QCD inspired potential model,
if the linear confinement term is taken as parent (with columbic term as
perturbation), Airy's function appears in the resultant wave function - which
is an infinite series. In the study of Isgur-Wise function (IWF) and its
derivatives with such a wave function, the infinite upper limit of integration
gives rise to divergence. In this paper, we have proposed some reasonable
cut-off values for the upper limit of such integrations and studied the
subsequent effect on the results. We also study the sensitivity of the order of
polynomial approximation of the infinite Airy series in calculating the
derivatives of IWF.Comment: 14 pages,6 tables 8 figure
Isgur-Wise Function for Heavy Light Mesons in D dimensional Potential Model
We report results of a potential model for mesons in D space-time dimension
developed by considering the quark-antiquark potential of Nambu-Goto strings.
With this wave function, we have studied Isgur-Wise function for heavy-light
mesons and its derivatives like slope and curvature. The dimensional dependence
of our results and a comparative study with the results of 3+1 dimensional QCD
are also reported.Comment: 11 pages, 4 figure