A saddle-point solution in the Weinberg-Salam theory

Klinkhamer, F. R.; Manton, N. S.

doi:10.1016/b978-0-444-88807-5.50095-9

Cited by 102 publications

(194 citation statements)

References 14 publications

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“…With this analogy, one can imagine that at finite temperature, a thermal fluctuation of the field could climb over the barrier. The sphaleron [148][149][150] is such a configuration, in the presence of the Higgs vacuum expectation value. The B + L violating rate mediated by sphalerons is Boltzmann suppressed: For leptogenesis, we are interested in the B + L violating rate at temperatures far above the EWPT.…”

Section: B + L Violating Ratesmentioning

confidence: 99%

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Leptogenesis

2008

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Leptogenesis is a class of scenarios where the baryon asymmetry of the Universe is produced from a lepton asymmetry generated in the decays of a heavy sterile neutrino. We explain the motivation for leptogenesis. We review the basic mechanism, and describe subclasses of models. We then focus on recent developments in the understanding of leptogenesis: finite temperature effects, spectator processes, and in particular the significance of flavor physics.Comment: 111 pages, 8 figures. Added Sect. 3 on anomalous B+L violation. Corrected equations (6.30) and (6.31). Added Sect. 9.1 with a simple example of the effects of flavours. Revised Sect. 10.1 on susy leptogenesis. Added several references, and other minor improvements. To be published in Physics Report

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Section: B + L Violating Ratesmentioning

confidence: 99%

“…In the early Universe, at temperatures above the electroweak phase transition (EWPT), such configurations occur frequently [10,22,147], and lead to rapid B+L violation. These configuations are commonly referred to as ''sphalerons'' [148][149][150].…”

Section: Anomalous B + L Violationmentioning

confidence: 99%

Leptogenesis

2008

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“…where m = i+y| m s, 0 Y_ i m mlp ' (22) PHYSICAL REVIEW D 91, 055004 (2015) fl(/?,r)2 = [/( r) ] 3^|°,…”

Section: -5 B Tree-level Analysis Including Thermal Mass Termsmentioning

confidence: 99%

“…To cause 055004-8 EWBG, the sphaleron process has to be decoupled at the breaking vacuum since the B + L number should not be washed out. The sphaleron rate is evaluated as [22] with A</> = \J<fy\ + < f>2 at the breaking vacuum. In order to decouple the sphaleron process, Tsph <3C H is required.…”

Section: Strongly First-order Phase Transitionmentioning

confidence: 99%

Towards a scale free electroweak baryogenesis

2015

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We propose a new electroweak baryogenesis scenario in high-scale supersymmetric (SUSY) models. We consider a singlet extension of the minimal SUSY standard model introducing additional vectorlike multiplets. We show that the strongly first-order phase transition can occur at a high temperature comparable to the soft SUSY breaking scale. In addition, the proper amount of the baryon asymmetry of the Universe can be generated via the lepton number violating process in the vectorlike multiplet sector. The typical scale of our scenario, the soft SUSY breaking scale, can be any value. Thus our new electroweak baryogenesis scenario can be realized at arbitrary scales, and we call this scenario scale free electroweak baryogenesis. This soft SUSY breaking scale is determined by other requirements. If the soft SUSY breaking scale is 0(10) TeV, our scenario is compatible with the observed mass of the Higgs boson and the constraints by electric dipole moment measurements and flavor experiments. Furthermore, the singlino can be a good candidate for dark matter.

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“…The sphaleron rate in the broken phase is accessible to semi-classical analysis [124,125] and is exponentially suppressed by the sphaleron energy Γ ws ≃ T 4 e −Esp/T .…”

Section: A the Weak Sphaleron Ratementioning

confidence: 99%

Quantum transport and electroweak baryogenesis

Konstandin¹

2013

Phys.-Usp.

111

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We review the mechanism of electroweak baryogenesis. The main focus of the review lies on the development of quantum transport equations from first principles in the Kadanoff-Baym framework. We emphasize the importance of the semi-classical force that leads to reliable predictions in most cases. Besides, we discuss the status of electroweak baryogenesis in the light of recent electric dipole moment probes and collider experiments in a variety of models.

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A saddle-point solution in the Weinberg-Salam theory

Cited by 102 publications

References 14 publications

Leptogenesis

Leptogenesis

Towards a scale free electroweak baryogenesis

Quantum transport and electroweak baryogenesis

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