• Quark-pion coupling constant in a chiral quark model

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    • Keywords


      Quark; confinement; vertex function; quark-pion coupling constant; chiral symmetry

    • Abstract


      Incorporating chiral-symmetry to the potential model of quarks with confining potentialU(r)=1/2 (1 +γ°)ar2 with mq=10 MeV anda=2.273 fm−3 that gives a reasonable quark-core contribution to μp, 〈r2p1/2 andgA, the quark-pion coupling constant for quarks in a nucleon is estimated.Gqqπ2/4π obtained between 0.4 and 0.5 is consistent with those extracted from experimental vector meson decay-width ratios by Suzuki and Bhaduri. The nucleon-pion coupling constantGNNπ2/4π comes out to be of the order of 13.1 in reasonable agreement with the experimental value.

    • Author Affiliations


      N Barik1 B K Dash1 2

      1. Department of Physics, Utkal University, Bhubaneswar - 751 004, India
      2. Department of Physics, S.C.S. College, Puri - 753 001, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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