Electroweak phase transition and Higgs boson couplings in the model based on supersymmetric strong dynamics

Kanemura, Shinya; Senaha, Eibun; Shindou, Tetsuo; Yamada, Toshifumi

doi:10.1007/jhep05(2013)066

Cited by 25 publications

(25 citation statements)

References 71 publications

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“…Such a nondecoupling effect can also appear in the radiative corrections to the triple Higgs boson coupling in the two Higgs doublet model [41] and some classes of the supersymmetric models [42].…”

Section: Triple Higgs Boson Couplingmentioning

confidence: 96%

Improved sphaleron decoupling condition and the Higgs coupling constants in the real singlet-extended standard model

Fuyuto

Senaha

2014

Phys. Rev. D

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We improve the sphaleron decoupling condition in the real singlet-extended standard model (SM). The sphaleron energy is obtained using the finite-temperature one-loop effective potential with daisy resummation. For moderate values of the model parameters, the sphaleron decoupling condition is found to be v C /T C > (1.1− 1.2), where T C denotes a critical temperature and v C is the corresponding vacuum expectation value of the doublet Higgs field at T C . We also investigate the deviation of the triple Higgs boson coupling from its standard model value in the region where the improved sphaleron decoupling condition is satisfied. As a result of the improvement, the deviation of the triple Higgs boson coupling gets more enhanced. In a typical case, if the Higgs couplings to the gauge bosons/fermions deviate from the SM values by about 3 (10)%, the deviation of the triple Higgs boson coupling can be as large as about 16 (50)%, which is about 4 (8)% larger than that based on the conventional criterion v C /T

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Section: Triple Higgs Boson Couplingmentioning

confidence: 96%

Improved sphaleron decoupling condition and the Higgs coupling constants in the real singlet-extended standard model

Fuyuto

Senaha

2014

Phys. Rev. D

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“…The EWPT has been investigated in the Standard Model (SM) [2,[5][6][7][8] as well as various extension models [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. For the SM, although the EWPT strength is larger than unity at the electroweak scale, it is still too weak for the mass of the Higgs boson to be compatible with current experimental limits [2,[5][6][7][8] beyond the SM at the weak scale [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Electroweak phase transition in the economical 3-3-1 model

et al. 2015

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We consider the EWPT in the economical 3-3-1 (E331) model. Our analysis shows that the EWPT in the model is a sequence of two first-order phase transitions, SU (3) → SU (2) at the TeV scale and SU (2) → U (1) at the 100 GeV scale. The EWPT SU (3) → SU (2) is triggered by the new bosons and the exotic quarks; its strength is about 1-13 if the mass ranges of these new particles are 10 2 -10 3 GeV. The EWPT SU (2) → U (1) is strengthened by only the new bosons; its strength is about 1-1.15 if the mass parts of H 0 1 , H ± 2 and Y ± are in the ranges 10-10 2 GeV. The contributions of H 0 1 and H ± 2 to the strengths of both EWPTs may make them sufficiently strong to provide large deviations from thermal equilibrium and B violation necessary for baryogenesis.

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“…(It is noteworthy that these terms are absent from their earlier works [62,63].) It is thus not surprising that in their model all L L H H operators come from SUSY EWS .…”

Section: Models In the Literaturementioning

confidence: 97%

Neutrino masses from SUSY breaking in radiative seesaw models

Figueiredo

2015

Eur. Phys. J. C

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Radiatively generated neutrino masses (m ν ) are proportional to supersymmetry (SUSY) breaking, as a result of the SUSY non-renormalisation theorem. In this work, we investigate the space of SUSY radiative seesaw models with regard to their dependence on SUSY breaking ( SUSY). In addition to contributions from sources of SUSY that are involved in electroweak symmetry breaking ( SUSY EWSB contributions), and which are manifest fromradiatively generated m ν can also receive contributions from SUSY sources that are unrelated to EWSB ( SUSY EWS contributions). We point out that recent literature overlooks pure-SUSY EWSB contributions (∝ μ/M) that can arise at the same order of perturbation theory as the leading order contribution from SUSY EWS . We show that there exist realistic radiative seesaw models in which the leading order contribution to m ν is proportional to SUSY EWS . To our knowledge no model with such a feature exists in the literature. We give a complete description of the simplest model topologies and their leading dependence on SUSY. We show that in one-loop realisations L L H H operators are suppressed by at least μ m soft /M 3 or m 2 soft /M 3 . We construct a model example based on a oneloop type-II seesaw. An interesting aspect of these models lies in the fact that the scale of soft-SUSY effects generating the leading order m ν can be quite small without conflicting with lower limits on the mass of new particles.

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Electroweak phase transition and Higgs boson couplings in the model based on supersymmetric strong dynamics

Cited by 25 publications

References 71 publications

Improved sphaleron decoupling condition and the Higgs coupling constants in the real singlet-extended standard model

Improved sphaleron decoupling condition and the Higgs coupling constants in the real singlet-extended standard model

Electroweak phase transition in the economical 3-3-1 model

Neutrino masses from SUSY breaking in radiative seesaw models

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