NonAbelian dipole radiation and the heavy quark expansion

Aug, 1997
12 pages
Published in:
  • Phys.Rev.Lett. 80 (1998) 3189-3192
e-Print:
Report number:
  • UND-HEP-97-BIG-06,
  • TTP-97-33

Citations per year

19982005201220192024024681012
Abstract:
Dipole radiation in QCD is derived to the second order in αs\alpha_s. A power-like evolution of the spin-singlet heavy quark operators is obtained to the same accuracy. In particular, O(αs2){\cal O}(\alpha_s^2) relation between a short-distance low-scale running heavy quark mass and the \barMS mass is given. We discuss the properties of the effective QCD coupling \aw(E) which governs the dipole radiation. This coupling is advantageous for heavy quark physics.
  • quantum chromodynamics
  • radiation: dipole
  • nonabelian
  • perturbation theory: higher-order
  • quark: mass
  • expansion: mass
  • sum rule
  • operator product expansion
  • coupling constant