Scalar sextet in the 331 model with right-handed neutrinos

Ky, N. Anh; Vân, Nguyễn Thị Hồng

doi:10.1103/physrevd.72.115017

Cited by 23 publications

(13 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[819] for details. The 3-3-1 models [826][827][828][829] are distinct SM gauge extensions which can naturally contain RH neutrinos at keV scale [830][831][832][833]. These models belong to a class of constructions where the SM gauge symmetry SU (2) L × U (1) Y is extended to SU (3) L × U (1) X in such a way that the cancellation of the anomalies involves all three families, offering an explanation for the long standing family number problem [826,[834][835][836].…”

Section: Dynamical Mass Generation and Composite Neutrinos (Authors: mentioning

confidence: 99%

“…[832], assuming the existence of a heavy scalar sextet S ∼ (6, −2/3). In this case Majorana mass terms for neutrinos are generated through the Yukawa interaction [831,833], …”

Section: Dynamical Mass Generation and Composite Neutrinos (Authors: mentioning

confidence: 99%

“…(6.55). It can be seen that the RH/active neutrino mass ratio is m N iR /m ν iL = v 2 χ /v 2 η [831,833], so that for v χ ≈ 1 TeV, v η ≈ 10 GeV masses at the keV scale for RH neutrinos are predicted, taking into account that the active neutrinos have masses of order m ν iL ≈ 0.1 eV [832]. The use of a scalar sextet was also developed in other ways to implement the seesaw mechanisms in 3-3-1 models [840][841][842].…”

Section: Dynamical Mass Generation and Composite Neutrinos (Authors: mentioning

confidence: 99%

See 2 more Smart Citations

A White Paper on keV sterile neutrino Dark Matter

Adhikari

Agostini

et al. 2017

J. Cosmol. Astropart. Phys.

372

316

View full text Add to dashboard Cite

Abstract. We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved -cosmology, astrophysics, nuclear, and particle physics -in each case viewed from both theoretical and experimental/observational perspectives. After reviewing the role of active neutrinos in particle physics, astrophysics, and cosmology, we focus on sterile neutrinos in the context of the Dark Matter puzzle. Here, we first review the physics motivation for sterile neutrino Dark Matter, based on challenges and tensions in purely cold Dark Matter scenarios. We then round out the discussion by critically summarizing all known constraints on sterile neutrino Dark Matter arising from astrophysical observations, laboratory experiments, and theoretical considerations. In this context, we provide a balanced discourse on the possibly positive signal from X-ray observations. Another focus of the paper concerns the construction of particle physics models, aiming to explain how sterile neutrinos of keV-scale masses could arise in concrete settings beyond the Standard Model of elementary particle physics. The paper ends with an extensive review of current and future astrophysical and laboratory searches, highlighting new ideas and their experimental challenges, as well as future perspectives for the discovery of sterile neutrinos.

show abstract

Section: Dynamical Mass Generation and Composite Neutrinos (Authors: mentioning

confidence: 99%

“…[832], assuming the existence of a heavy scalar sextet S ∼ (6, −2/3). In this case Majorana mass terms for neutrinos are generated through the Yukawa interaction [831,833], …”

Section: Dynamical Mass Generation and Composite Neutrinos (Authors: mentioning

confidence: 99%

Section: Dynamical Mass Generation and Composite Neutrinos (Authors: mentioning

confidence: 99%

See 1 more Smart Citation

A White Paper on keV sterile neutrino Dark Matter

Adhikari

Agostini

et al. 2017

J. Cosmol. Astropart. Phys.

372

316

View full text Add to dashboard Cite

show abstract

“…The idea is to verify if the model fulfills the conditions that may lead to the discovery of RHNs. This model performs the type-I seesaw mechanism in a very peculiar way since the mass matrix of the RHNs and of the standard ones, both, involves the same Yukawa couplings [10][11][12]. This guarantee that the heaviest RHN has mass of 1 TeV or less, which are accessible kinematically at the future LHC.…”

Section: Introductionmentioning

confidence: 99%

Resonant production of Z′ and signature of right-handed neutrinos within a 3-3-1 model

2018

View full text Add to dashboard Cite

Recent simulation studies indicate that right-handed neutrinos may be discovered at future high luminosity LHC runs as long as a new neutral gauge boson, Z 0 , have been discovered first. In this case, when Z 0 is resonantly produced at the LHC it, subsequently, decays into a pair of right-handed neutrinos with mass up to TeV scale. Then the decay of these neutrinos leave as signature trilepton final states and/or same-sign dimuon and a boost diboson. The prospect of discovering right-handed neutrinos through this mechanism has been developed within Abelian gauge extension of the standard model. In this work we study the processes involved in this discovery mechanism within the framework of a 3-3-1 model.

show abstract

“…In general depending on: the number of scalar triplets, on discrete symmetries and on the VEV structure, the model could have, or not, FCNC in all charged sectors, and the mixing matrix in the couplings with W could be, or not, exactly the same as in the SM. An scalar sextet can also be introduced in order to have more space to generate neutrino masses [15,20].…”

Section: Model With Right-handed Neutrinosmentioning

confidence: 99%

Closing theSU(3)L⊗U(1)Xsymmetry at the electroweak scale

2006

View full text Add to dashboard Cite

We show that some models with SU3 C SU3 L U1 X gauge symmetry can be realized at the electroweak scale and that this is a consequence of an approximate global SU2 LR symmetry. This symmetry implies a condition among the vacuum expectation value of one of the neutral Higgs scalars, the U1 X 's coupling constant, g X , the sine of the weak mixing angle sin W , and the mass of the W boson, M W . In the limit in which this symmetry is valid it avoids the tree level mixing of the Z boson of the standard model with the extra Z 0 boson. We have verified that the oblique T parameter is within the allowed range indicating that the radiative corrections that induce such a mixing at the 1-loop level are small. We also show that a SU3 LR custodial symmetry implies that in some of the models we have to include sterile (singlets of the 3-3-1 symmetry) right-handed neutrinos with Majorana masses, since the seesaw mechanism is mandatory to obtain light active neutrinos. Moreover, the approximate SU2 LR SU3 LR symmetry implies that the extra nonstandard particles of these 3-3-1 models can be considerably lighter than it had been thought before so that new physics can be really just around the corner.

show abstract

Scalar sextet in the 331 model with right-handed neutrinos

Cited by 23 publications

References 59 publications

A White Paper on keV sterile neutrino Dark Matter

A White Paper on keV sterile neutrino Dark Matter

Resonant production of Z′ and signature of right-handed neutrinos within a 3-3-1 model

Closing theSU(3)L⊗U(1)Xsymmetry at the electroweak scale

Contact Info

Product

Resources

About