Minimal Supergravity Scalar Neutrino Dark Matter and Inverse Seesaw Neutrino Masses

Arina, Chiara; Bazzocchi, Federica; Fornengo, N.; Romão, Jorge C.; Valle, J. W. F.

doi:10.1103/physrevlett.101.161802

Cited by 91 publications

(67 citation statements)

References 17 publications

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“…For the sake of brevity we give here a short overview of SUSY ISS models only. To our knowledge these models can be roughly categorized under one of the four categories where each time the additional fields required in the ISS have to be added: (i) MSSM [23][24][25][26], (ii) MSSM/NMSSM with extended gauge symmetry [27][28][29][30][31][32], (iii) NMSSM [17,33], and (iv) supersymmetric Left-Right symmetry model [34,35]. We briefly summarize these models as follows.…”

Section: Jhep10(2017)039mentioning

confidence: 99%

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A supersymmetric electroweak scale seesaw model

Chang

Cheung

Ishida

et al. 2017

J. High Energ. Phys.

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In this paper we propose a novel supersymmetric inverse seesaw model which has only one additional Z 6 symmetry. The field content is minimal to get a viable neutrino spectrum at tree-level. Interestingly, the inverse seesaw scale in our model is related to the scale of electroweak symmetry breaking. Due to that origin we are less biased about hierarchies and discuss three different types of the inverse seesaw mechanism with different phenomenologies. We can successfully reproduce neutrino masses and mixing and our model is consistent with current bounds on neutrinoless double beta decay, non-unitarity of the PMNS matrix and charged lepton flavor violation.

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Section: Jhep10(2017)039mentioning

confidence: 99%

“…Of course it is also possible and popular to introduce three pairs of the extra gauge singlets with opposite lepton numbers, see, e.g. [23][24][25].…”

Section: Jhep10(2017)039mentioning

confidence: 99%

A supersymmetric electroweak scale seesaw model

Chang

Cheung

Ishida

et al. 2017

J. High Energ. Phys.

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“…Thus the sneutrino LSP is in general a linear combination of the superpartners of the LH neutrino and the singlet fermions. Several embeddings of this set up have been discussed in the literature within the MSSM gauge group [81] as well as with extended gauge symmetries such as SU (2) [85,86] and SU(2) L × U(1) Y × U(1) R [87]. In this paper, we choose to work within the MSSM gauge group and take a hybrid approach for the model parameters similar to that in refs.…”

Section: An Overview Of the Modelmentioning

confidence: 99%

“…In this paper, we choose to work within the MSSM gauge group and take a hybrid approach for the model parameters similar to that in refs. [78,81] to find suitable benchmark points, i.e. a low energy input for the MSSM singlet fermion sector and for the lepton-number violating soft SUSY-breaking sector while a top-down…”

Section: An Overview Of the Modelmentioning

confidence: 99%

Invisible Higgs decay in a supersymmetric inverse seesaw model with light sneutrino dark matter

Banerjee

Dev

Mondal

et al. 2013

J. High Energ. Phys.

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Within the framework of a constrained Minimal Supersymmetric Standard Model (cMSSM) augmented by an MSSM singlet-pair sector to account for the non-zero neutrino masses by inverse seesaw mechanism, the lightest supersymmetric particle (LSP) can be a mixed sneutrino with mass as small as 50 GeV, satisfying all existing constraints, thus qualifying as a light dark matter candidate. We study the possibility of the lightest neutral Higgs boson in this model decaying invisibly into a pair of sneutrino LSPs, thereby giving rise to novel missing energy signatures at the LHC. We perform a two-parameter global analysis of the LHC Higgs data available till date to determine the optimal invisible Higgs branching fraction in this scenario, and obtain a 2σ (1σ) upper limit of 0.25 (0.15). A detailed cut-based analysis is carried out thereafter, demonstrating the viability of our proposed signal vis-a-vis backgrounds at the LHC.

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“…Several attempts have been made to solve this conundrum through the reduction of the sneutrino coupling with the Z boson. This can be achieved by introducing a mixture of left-and right-handed sneutrino states [4,5,6], however a significant mixture is only possible if some particular supersymmetry breaking with an unnaturally large trilinear term [4] is adopted. Another possibility is to consider a pure right-handed sneutrino [7,8,9,10].…”

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confidence: 99%

Thermal right-handed sneutrino dark matter in the Next-to-MSSM

Cerdeño¹

2010

AIP Conference Proceedings

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The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Introduction. The minimal supersymmetric extension of the standard model (MSSM) contains two possible candidates for WIMP dark matter (DM), the neutralino and the (left-handed) sneutrino [1]. The neutralino is a popular and widely studied candidate. On the contrary, the (left-handed) sneutrino in the MSSM has a sizable coupling to the Z boson and either annihilates too rapidly (resulting in a very small relic abundance) or gives rise to a too large scattering cross-section off nuclei (being excluded by direct searches of DM) [2]. Several attempts have been made to solve this conundrum through the reduction of the sneutrino coupling with the Z boson. This can be achieved by introducing a mixture of left-and right-handed sneutrino states [4,5,6], however a significant mixture is only possible if some particular supersymmetry breaking with an unnaturally large trilinear term [4] is adopted. Another possibility is to consider a pure right-handed sneutrino [7,8,9,10]. These cannot be thermal relics, since their coupling to ordinary matter is extremely reduced by the neutrino Yukawa coupling [7,8,9], unless they are somehow coupled to the observable sector, for example via an extension of the gauge [10,11] or Higgs [13,14,15,16,18] sectors. As a final possibility, non-LSP right-handed sneutrino DM was also proposed [17].Extending the MSSM Higgs sector is particularly appealing in order to address the so-called "µ problem" [12]. The next-to-minimal supersymmetric standard model (NMSSM) offers a simple solution by introducing a singlet superfield S and promoting the bilinear µH 1 H 2 term to a trilinear coupling λ SH 1 H 2 . After radiative electroweak symmetry-breaking (REWSB), S develops a vacuum expectation value (VEV) and provides an effective term, µ = λ S .With this motivation, we study an extension of the NMSSM in which a singlet scalar right-handed neutrino superfield, N, is included to obtain non-vanishing neutrino Majorana masses with a low scale see-saw mechanism. The superpotential reads [15,18] W = W NMSSM + λ N SNN + y N L · H 2 N, and contains a new trilinear coupling between the singlet superfields S and N and the corresponding Yukawa terms. The terms NNN and

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Minimal Supergravity Scalar Neutrino Dark Matter and Inverse Seesaw Neutrino Masses

Cited by 91 publications

References 17 publications

A supersymmetric electroweak scale seesaw model

A supersymmetric electroweak scale seesaw model

Invisible Higgs decay in a supersymmetric inverse seesaw model with light sneutrino dark matter

Thermal right-handed sneutrino dark matter in the Next-to-MSSM

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