• Ratios ofB andD meson decay constants with heavy quark symmetry

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      https://www.ias.ac.in/article/fulltext/pram/046/06/0411-0416

    • Keywords

       

      Decay constants; heavy quark effective theory

    • Abstract

       

      SU(3) flavor symmetry allows the decay constantsfD1 andfD2 as well asfB1 andfB1 to be equal. But due toSU(3) flavor symmetry breaking the ratiosfB1/fB2 andfD1/fD2 are deviated from unity. We have estimated these ratios in the heavy quark effective theory and obtainedfB1/fB2=0.93,fD1/fD2=0.94 and the double ratio (fB1/fB2)/(fD1/fD2)=0.99.

    • Author Affiliations

       

      A K Giri1 L Maharana1 R Mohanta1

      1. Physics Department, Utkal University, Bhubaneswar - 751 004, India
    • Dates

       
  • Pramana – Journal of Physics | News

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