Low-Energy Manifestations of Heavy Particles: Application to the Neutral Current

Apr, 1978
21 pages
Published in:
  • Phys.Rev.D 18 (1978) 242
Report number:
  • COO-2220-127

Citations per year

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Abstract: (APS)
It is argued that in broken-symmetry theories the decoupling of heavy particles is incomplete. Some possible manifestations of this effect in neutral-current processes and the decay KL→μμ are discussed. In the case of the neutral current, heavy-particle effects may be calculated accurately including strong-interaction corrections. A new method of making such calculations is explained and its application to the neutral-current process discussed in detail. The method is more efficient than previous ones and is especially useful in calculations involving several mass scales.
  • FIELD THEORETICAL MODEL: RENORMALIZABLE
  • PARTICLE: HEAVY
  • heavy quark
  • decoupling
  • ENERGY: LOW
  • SYMMETRY BREAKING
  • NEUTRAL CURRENT
  • CURRENT: AXIAL-VECTOR
  • RENORMALIZATION GROUP
  • K0(L): LEPTONIC DECAY