• A quark model based on QCD scale anomaly

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      https://www.ias.ac.in/article/fulltext/pram/032/03/0181-0193

    • Keywords

       

      Quarks; scale anomaly; glueball; soliton; nucleon; static properties; quantum chromodynamics

    • Abstract

       

      We consider a quark model based on QCD scale anomaly in which the quarks move in the field of an effective glueball field. Hadrons correspond to solitonic bags of higher energy density in a nonperturbative sea of condensed gluons. We calculate the static properties of nucleon in this model and find that the nucleon mass is far too large (2.4–4 GeV) and the proton charge radius (0.37–0.54 fm) is low. The proton gyromagnetic ratio and gA/gv are in reasonable agreement with the experimental numbers.

    • Author Affiliations

       

      J Segar1 M S Sriram1

      1. Department of Theoretical Physics, University of Madras, Guindy Campus, Madras - 600025, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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