Theorem on vanishing multiloop radiative corrections to sin sup 2. theta. sub W in grand unified theories at high mass scales

Journal Article · Mon Feb 10 00:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.754· OSTI ID:5084174

Parida, M K; Patra, P K ^[1]

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1. Department of Physics, North-Eastern Hill University, Bijni Complex, Laitumkhrah, Shillong 793 003 (India)

In contrast to the conventional belief that the gauge-boson-propagator renormalizations to every {ital m}-loop order contribute to sin{sup 2}{ital FTHETA}{sub {ital W}} at all scales ({mu}) below the grand unification mass ({ital M}{sub {ital U}}), for the first time we prove that all higher-order multiloop ({ital m}{ge}2) corrections are absent for {mu}={ital M}{sub {ital I}}{minus}{ital M}{sub {ital U}} in a class of grand unified theories where the Pati-Salam intermediate gauge symmetry breaks at the highest intermediate scale ({ital M}{sub {ital I}}). This theorem holds also with supersymmetry and in string-inspired models.

• OSTI ID: 5084174
• Journal Information: Physical Review Letters; (United States), Vol. 68:6; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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GRAND UNIFIED THEORY
PERTURBATION THEORY
INTERMEDIATE VECTOR BOSONS
RENORMALIZATION
SU-2 GROUPS
SU-3 GROUPS
U-1 GROUPS
BOSONS
ELEMENTARY PARTICLES
FIELD THEORIES
INTERMEDIATE BOSONS
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE MODELS
SU GROUPS
SYMMETRY GROUPS
U GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
662210* - Specific Theories & Interaction Models
Particle Systematics- Unified Theories & Models- (1992-)
662110 - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-)