Sphalerons at finite mixing angle: Perturbative analysis

Journal Article · Sat May 15 04:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.47.4789· OSTI ID:6876549

Brihaye, Y ^[1]; Kunz, J ^[2]

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1. Faculte des Sciences, Universite de Mons-Hainaut, B-7000 Mons (Belgium)
2. Instituut voor Theoretische Fysica, Rijksuniversiteit te Utrecht, NL-3508 TA Utrecht (Netherlands) Fachbereich Physik, Universitaet Oldenburg, Postfach 2503, W-2900 Oldenburg (Germany)

In the limit of the vanishing mixing angle [theta][sub [ital W]], the Weinberg-Salam theory admits two kinds of spherically symmetric, unstable classical solutions: the sphaleron and the bisphalerons. When [theta][sub [ital W]] is finite, these solutions retain only an axial symmetry; they become spatially deformed. We study the influence of the mixing angle on the (bi)sphaleron solutions perturbatively, with the main emphasis on the U(1) gauge field, generated in the leading order approximation, and on the correction to the classical energy.

• OSTI ID: 6876549
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 47:10; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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