Heavy-mass power-counting theorem and a proof of decoupling in the momentum-subtraction scheme

Journal Article · Sun Jan 15 04:00:00 EST 1984 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.29.241· OSTI ID:5015488

Schimert, T; Chiang, C C

We establish a heavy-mass power-counting prescription describing the effects of virtual heavy particles at low energy in an arbitrary Feynman diagram using momentum subtraction to remove divergences from its corresponding Feynman integral. Furthermore, we show that in the absence of heavy-mass-dependent vertices, the virtual heavy-mass effects are suppressed in the low-energy regime by an inverse power of the heavy mass given by our power-counting prescription. As a result, we obtain a simple proof of the Appelquist-Carazzone decoupling theorem.

• Research Organization: Center for Particle Theory, Department of Physics, The University of Texas at Austin, Austin, Texas 78712
• OSTI ID: 5015488
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 29:2; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645201 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- General & Scattering Theory
645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COUPLING CONSTANTS
DECOUPLING
DIAGRAMS
FEYNMAN DIAGRAM
FEYNMAN PATH INTEGRAL
FIELD THEORIES
INTEGRALS
INTERACTIONS
MASS
PARTICLE INTERACTIONS
QUANTUM FIELD THEORY
SPACE-TIME