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    • Isgur–Wise function in a QCD-inspired potential model with WKB approximation

      BHASKAR JYOTI HAZARIKA D K CHOUDHURY

      Research Article Volume 88 Issue 3 March 2017 Article ID 0056

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/088/03/0056

    • Keywords

       

      Wentzel–Kramers–Brillouin approximation; Isgur–Wise function; slope and curvature

    • Abstract

       

      We use Wentzel–Kramers–Brillouin (WKB) approximation for calculating the slope and curvature of Isgur–Wise function in a QCD-inspired potential model. This work is an extension of the approximation methods to the QCD-inspired potential model. The approach hints at an effective range of distance for calculating the slope and curvature of Isgur–Wise function. Comparison is also made with those of Dalgarno method and variationallyimproved perturbation theory (VIPT) as well as other models to show the advantages of using WKB approximation.

    • Author Affiliations

       

      BHASKAR JYOTI HAZARIKA1 D K CHOUDHURY1 2

      1. Centre for Theoretical Studies, Pandu College, Guwahati 781 012, India
      2. Physics Academy of North East, Gauhati University, Guwahati 781 014, India

    • Dates

       
      Published
      16 March 2017
      Manuscript received
      14 April 2016
      Manuscript revised
      16 August 2016
      Accepted
      5 October 2016
      Early published
      Unedited version published online
      Final version published online
      28 February 2017

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