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    • Quark-pion coupling constant in a chiral quark model

      N Barik B K Dash

      Particle Physics Volume 24 Issue 5 May 1985 pp 707-713

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      https://www.ias.ac.in/article/fulltext/pram/024/05/0707-0713

    • 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, 〈r2 〉p1/2 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

       
      Published
      May 1985
      Manuscript received
      30 October 1984
      Manuscript revised
      11 February 1985

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