• Weak electric and magnetic form factors for semileptonic baryon decays in a relativistic quark model

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      https://www.ias.ac.in/article/fulltext/pram/037/01/0047-0056

    • Keywords

       

      Weak electric and magnetic form factors; SU(3)-symmetry breaking; quark model; semileptonic baryon decays; Cabibbo fits

    • Abstract

       

      Weak electric and magnetic form factors for semileptonic baryon decays are calculated in a relativistic quark model based on the Dirac equation with the independent-quark confining potential of the formVq(r)=1/2(1+γ0)(a2r+V0). The values obtained for (g2/g1) are not very much different from the nonrelativistic results of Donoghue and Holstein. The values of (g1/f1) extracted from our model calculations of (f2/f1) in the Cabibbo limit compare well with the experimental values. The values of (f2/f1) for various semileptonic transitions are also estimated incorporating phenomenologically the effect of nonzerog2 in the ratio (g1/f1). It is found that the SU(3)-symmetry breaking does not generate significant departures in (f2/f1) values from the corresponding Cabibbo predictions.

    • Author Affiliations

       

      S N Jena1 S Panda1

      1. Department of Physics, Berhampur University, Berhampur - 760 007, India
    • Dates

       
  • Pramana – Journal of Physics | News

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