Nonperturbative renormalization constants using Ward identities

Apr, 1999
8 pages
Published in:
  • Phys.Lett.B 461 (1999) 79-88
e-Print:
Report number:
  • LAUR-99-1717,
  • UW-PT-98-15,
  • UTCCP-P-56,
  • DUKE-TH-99-185

Citations per year

1999200620132020202502468
Abstract: (arXiv)
We extend the application of axial Ward identities to calculate bA,bPb_A, b_P and bTb_T, coefficients that give the mass dependence of the renormalization constants of the corresponding bilinear operators in the quenched theory. The extension relies on using operators with non-degenerate quark masses. It allows a complete determination of the O(a) improvement coefficients for bilinears in the quenched approximation using Ward Identities alone. Only the scale dependent normalization constants ZP0Z_P^0 (or ZS0Z_S^0) and ZTZ_T are undetermined. We present results of a pilot numerical study using hadronic correlators.
Note:
  • 8 pages. Modified "axis" source for figures also included
  • gauge field theory: SU(3)
  • fermion: lattice field theory
  • renormalization: nonperturbative
  • mass dependence
  • Ward identity: axial
  • operator: Dirac
  • approximation: quenching
  • hadron: correlation function
  • numerical calculations: Monte Carlo