High Temperature Dimensional Reduction and Parity Violation

Abstract

The effective super-renormalizable 3-dimensional Lagrangian, describing the high temperature limit of chiral gauge theories, has more symmetry than the original 4d Lagrangian: parity violation is absent. Parity violation appears in the 3d theory only through higher-dimensional operators. We compute the coefficients of dominant P-odd operators in the Standard Electroweak theory and discuss their implications. We also clarify the parametric accuracy obtained with dimensional reduction.

12 pages, 1 figure. Small clarifications added. To appear in Phys.Lett.B

References in corpus (3)

• A Non-Perturbative Analysis of the Finite T Phase Transition in SU(2)xU(1) Electroweak Theory
• SUSY and the Electroweak Phase Transition
• SU(5)+Adjoint Higgs Model at Finite Temperature

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