Creating the baryon asymmetry at the electroweak phase transition

Dine, Michael; Huet, Patrick; Singleton, Robert L.; Susskind, Leonard

doi:10.1016/0370-2693(91)91905-b

Cited by 191 publications

(197 citation statements)

References 29 publications

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“…Finally, if the necessary additional source of CP violation is due to the operator (1), the mechanism producing the excess of baryons should be due to the so-called local baryogenesis for which the generated value n B /s of the baryon number to entropy ratio can reliably be estimated only in the quasi-static regime (thick, slowly moving walls of the bubbles of the new phase) [27,38]; in the opposite regime of fast change the value n B /s is rather hard to estimate even if the scale Λ in (1) is known [4,27,37]. It is also interesting to note that the operator (1) would contribute to the nowadays very important decay h 0 → γγ:…”

Section: Discussionmentioning

confidence: 99%

Inert dark matter and strong electroweak phase transition

2012

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The main virtue of the Inert Doublet Model (IDM) is that one of its spinless neutral bosons can play the role of Dark Matter. Assuming that the additional sources of CP violation are present in the form of higher dimensional operator(s) we reexamine the possibility that the model parameters for which the right number density of relic particles is predicted are compatible with the first order phase transition that could lead to electroweak baryogenesis.We find, taking into account recent indications from the LHC and the constraints from the electroweak precision data, that for a light DM (40-60 GeV) particle H 0 and heavy, almost degenerate additional scalars H ± and A 0 this is indeed possible but the two parameters most important for the strength of the phase transition: the common mass of H ± and A 0 and the trilinear coupling of the Higgs-like particle h 0 to DM are strongly constrained. H ± and A 0 must weight less than ∼ 440 GeV if the inert minimum is to be the lowest one and the value of the h 0 H 0 H 0 coupling is limited by the XENON 100 data. We stress the important role of the zero temperature part of the potential for the strength of the phase transition.PACS numbers:12.60. Fr, 12.15.Ji, 98.80.Cq, 95.35.+d

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Section: Discussionmentioning

confidence: 99%

Inert dark matter and strong electroweak phase transition

2012

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“…In contrast to the high-T expansion of the full gauge-dependent effective potential (29), the RHS of Eq. (51) contains no T φ 3 term.…”

Section: High-t Effective Theorymentioning

confidence: 99%

Baryon washout, electroweak phase transition, and perturbation theory

Patel

Ramsey-Musolf

2011

J. High Energ. Phys.

266

397

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We analyze the conventional perturbative treatment of sphaleron-induced baryon number washout relevant for electroweak baryogenesis and show that it is not gauge-independent due to the failure of consistently implementing the Nielsen identities order-by-order in perturbation theory. We provide a gauge-independent criterion for baryon number preservation in place of the conventional (gauge-dependent) criterion needed for successful electroweak baryogenesis. We also review the arguments leading to the preservation criterion and analyze several sources of theoretical uncertainties in obtaining a numerical bound. In various beyond the standard model scenarios, a realistic perturbative treatment will likely require knowledge of the complete two-loop finite temperature effective potential and the one-loop sphaleron rate.

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“…It provides a technical solution to the hierarchy problem and has its roots in more fundamental theories unifying gravity with the rest of interactions. The MSSM has new violating phases [9] that can drive enough amount of baryon asymmetry [10]- [16] provided that the previous phases are not much less than 1 and the charginos and neutralinos are not heavier than 200 GeV 1 . As for the strength of the phase transition [17]- [19], a region in the space of supersymmetric parameters has been found [20]- [28] where the phase transition is strong enough to let sphaleron interactions go out of equilibrium after the phase transition and not erase the generated baryon asymmetry.…”

Section: Introductionmentioning

confidence: 99%

Bubbles in the supersymmetric standard model

1998

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We compute the tunneling probability from the symmetric phase to the true vacuum, in the first order electroweak phase transition of the MSSM, and the corresponding Higgs profiles along the bubble wall. We use the resummed two-loop temperature-dependent effective potential, and pay particular attention to the light stop scenario, where the phase transition can be sufficiently strongly first order not to wipe off any previously generated baryon asymmetry. We compute the bubble parameters which are relevant for the baryogenesis mechanism: the wall thickness and ∆β. The two-loop corrections provide important enhancement effects, with respect to the one-loop results, in the amount of baryon asymmetry.

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Creating the baryon asymmetry at the electroweak phase transition

Cited by 191 publications

References 29 publications

Inert dark matter and strong electroweak phase transition

Inert dark matter and strong electroweak phase transition

Baryon washout, electroweak phase transition, and perturbation theory

Bubbles in the supersymmetric standard model

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