Neutral-current results without gauge theories
Low-energy weak interactions are phenomenologically described in terms of an intrinsic part possessing a global SU(2) symmetry plus an additional electromagnetic correction. This description reconstructs the Weinberg-Salam SU(2) x U(1) gauge-theory effective Lagrangian. Use of dispersion relations a...
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Veröffentlicht in: | Phys. Rev., D; (United States) D; (United States), 1979-01, Vol.19 (1), p.335-346 |
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description | Low-energy weak interactions are phenomenologically described in terms of an intrinsic part possessing a global SU(2) symmetry plus an additional electromagnetic correction. This description reconstructs the Weinberg-Salam SU(2) x U(1) gauge-theory effective Lagrangian. Use of dispersion relations and Schwarz inequalities provides a lower bound on the range of the charged-current weak force, comparable to that obtained from gauge theories. The connection with the usual gauge-theory approach, especially the work of Georgi and Weinberg based on the group SU(2) x U(1) x G, is elucidated. |
doi_str_mv | 10.1103/PhysRevD.19.335 |
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subjects | 645202 - High Energy Physics- Particle Interactions & Properties-Theoretical- Electromagnetic Interactions & Properties 645203 - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties BASIC INTERACTIONS COMPOSITE MODELS CORRECTIONS FERMIONS FUNCTIONS INTERACTIONS LAGRANGIAN FUNCTION LEPTON-LEPTON INTERACTIONS LIE GROUPS MATHEMATICAL MODELS MATRICES NEUTRAL-CURRENT INTERACTIONS PARTICLE INTERACTIONS PARTICLE MODELS PHYSICS OF ELEMENTARY PARTICLES AND FIELDS QUARK MODEL RADIATIVE CORRECTIONS RENORMALIZATION S MATRIX SU GROUPS SU-2 GROUPS SYMMETRY BREAKING SYMMETRY GROUPS U GROUPS U-1 GROUPS UNIFIED GAUGE MODELS WEAK INTERACTIONS WEINBERG-SALAM GAUGE MODEL |
title | Neutral-current results without gauge theories |
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