Dressed-quarks and the nucleon's axial charge

  title={Dressed-quarks and the nucleon's axial charge},
  author={Lei Chang and Craig D. Roberts and Sebastian M. Schmidt},
qA, at infrared momenta. Since this effect disappears as chiral symmetry is restored, one may argue that gA vanishes with the restoration of chiral symmetry because no nucleon bound-state survives the associated transition. The suppression of g q A is shown to be part of an explanation for a 25% reduction of gA from its nonrelativistic quark-model value. Critical too, however, is the presence of dressed-quark angular momentum within the nucleon. The value of g q depends on the kernels of the… CONTINUE READING

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