Theoretical Status of the B_c Meson in the Shifted l-Expansion Technique

2005/04/20 by Sameer M. Ikhdair, Ikhdair, Sameer M.
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0504176

33 pages, 1 figure

arxiv created 2005/04/21 · arxiv updated 2009/12/01

Abstract

In the framework of phenomenological static and QCD-motivated model potentials for heavy quarkonium, we compute the bc mass spectrum as well as its \QTRrm1S hyperfine splitting using the recently introduced shifted l- expansion technique. We also predict the leptonic constant f_B_c of the lightest pseudoscalar B_c and f_B_c^∗ of the vector B_c^∗ states taking into account the one-loop and two-loop QCD corrections. Further, we use the scaling relation to predict the leptonic constant of the RrmnS-states of the bc system. For the sake of comparison, we use the same fitting parameters of our previous model potentials. From our results we conclude that shifted l-expansion method has the same accuracy, convergence and status as our previous work.

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