A supersymmetric electroweak scale seesaw model

Chang, Jung; Cheung, Kingman; Ishida, Hiroyuki; Lu, Chih-Ting; Spinrath, Martin; Tsai, Yue-Lin Sming

doi:10.1007/jhep10(2017)039

Cited by 10 publications

(6 citation statements)

References 82 publications

(124 reference statements)

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“…This is another economic model that naturally suppresses the DM-nucleon scattering. In fact, given that the neutralino DM has been tightly limited by the DD experiments in recent years, the sneutrino DM embedded in different extensions of the MSSM has regained broad interest [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49].…”

Section: Introductionmentioning

confidence: 99%

Suppressing the scattering of WIMP dark matter and nucleons in supersymmetric theories

et al. 2020

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So far dark matter direct detection experiments have indicated any dark matter particle to have feeble interactions with nucleons, while the dark relic matter density favors it to take part in weak interactions. We point out that the neutralino dark matter in the Minimal Supersymmetric Standard Model (MSSM) and the Next-to-Minimal Supersymmetric Standard Model (NMSSM) fails to process these two seemingly contradictory features in their most natural parameter space due to the limited theoretical structure. By contrast, the seesaw extension of the NMSSM, which was originally proposed to solve neutrino mass problem, enables the lightest sneutrino as a new viable DM candidate to readily have the features, and thus satisfies the constraints of the DM measurements in its broad parameter space. Compared with the Type-I seesaw extension, the dark matter physics in the inverse seesaw extension is more flexible to be consistent with current dark matter and collider experimental results. We conclude that the weakly interacting massive particles in supersymmetric theory is still a promising dark matter candidate.

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Section: Introductionmentioning

confidence: 99%

Suppressing the scattering of WIMP dark matter and nucleons in supersymmetric theories

et al. 2020

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“…We showed by both analytic formulas and numerical calculations that the resulting theory (abbreviated as ISS-NMSSM hereafter) was one of the most economic framework to generate the neutrino mass and, meanwhile, to reconcile the DM DD experiments naturally [8,14]. We add that, besides us, a lot of authors have showed interest in the sneutrino DM in recent years [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36], but none of them considered the same theoretical framework as ours.…”

Section: Introductionmentioning

confidence: 83%

Impact of leptonic unitarity and dark matter direct detection experiments on the NMSSM with inverse seesaw mechanism

Cao

Pan

et al. 2020

J. High Energ. Phys.

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In the Next-to-Minimal Supersymmetric Standard Model with the inverse seesaw mechanism to generate neutrino masses, the lightest sneutrino may act as a feasible dark matter candidate in vast parameter space. In this case, the smallness of the leptonic unitarity violation and the recent XENON-1T experiment can limit the dark matter physics. In particular, they set upper bounds of the neutrino Yukawa couplings λν and Yν. We study such effects by encoding the constraints in a likelihood function and carrying out elaborated scans over the parameter space of the theory with the Nested Sampling algorithm. We show that these constraints are complementary to each other in limiting the theory, and in some cases, they are very strict. We also study the impact of the future LZ experiment on the theory.

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“…One is that in the Type-I extension, the sneutrino DM is a roughly pure right-handed sneutrino state, while in the inverse seesaw extension, it is a mixture of νL , νR and X with the last two components being dominated. Consequently, the DM physics in the inverse seesaw extension is more complex [48][49][50]. The other is that in both the extensions, CP-even and CP-odd sneutrino states split in mass due to the presence of lepton number violating interactions.…”

Section: Arxiv:180703762v3 [Hep-ph] 30 May 2019mentioning

confidence: 99%

“…It has long been known that the fieldŜ plays an extraordinary role in the model: solving the µ problem of the MSSM [38], enhancing the theoretical prediction about the mass of the SM-like Higgs boson [39][40][41] as well as enriching the phenomenology of the NMSSM (see for example [42][43][44][45][46][47]). In this context we stress that, in the seesaw extension of the NMSSM, it is also responsible for heavy neutrino mass and the annihilation of sneutrino DM [48][49][50], and consequently makes the sneutrino DM compatible with various measurements. The underlying reason for the capability is that the newly introduced heavy neutrino fields in the extension are singlets under the gauge group of the SM model, so they can couple directly withŜ.…”

Section: Introductionmentioning

confidence: 99%

Bayesian analysis of sneutrino dark matter in the NMSSM with a type-I seesaw mechanism

Cao

Pan

et al. 2019

Phys. Rev. D

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In the Next-to-Minimal Supersymmetric Standard Model (NMSSM) with extra heavy neutrino superfields, neutrino may acquire its mass via a seesaw mechanism and sneutrino may act as a viable dark matter (DM) candidate. Given the strong tension between the naturalness for Z boson mass and the DM direct detection experiments for customary neutralino DM candidate, we augment the NMSSM with Type-I seesaw mechanism, which is the simplest extension of the theory to predict neutrino mass, and study the scenarios of sneutrino DM. We construct likelihood function with LHC Higgs data, B-physics measurements, DM relic density and its direct and indirect search limits, and perform a comprehensive scan over the parameter space of the theory by Nested Sampling method. We adopt both Bayesian and frequentist statistical quantities to illustrate the favored parameter space of the scenarios, the DM annihilation mechanism as well as the features of DMnucleon scattering. We find that the scenarios are viable over broad parameter regions, especially the Higgsino mass µ can be below about 250GeV for a significant part of the region, which predicts Z boson mass in a natural way. We also find that the DM usually co-annihilated with the Higgsinos to get the measured relic density, and consequently the DM-nucleon scattering rate is naturally suppressed to coincide with the recent XENON-1T results even for light Higgsinos. Other issues, such as the LHC search for the Higgsinos, are also addressed.1 Numerically speaking, the mixing angle should satisfy sin θν ∼ 0.02 for mν = 100GeV to predict the right DM relic density by the Z boson mediated annihilation, which corresponds to the scattering rate at the order of 10 −45 cm −2 [34]. Such a rate has been excluded by the latest XENON-1T experiment, which, on the other side, limits sin θν < 0.01 by the recent calculation in [35]. Moreover, we find that the correlation between the relic density and the scattering rate is underestimated in FIG.1 of [36].

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A supersymmetric electroweak scale seesaw model

Cited by 10 publications

References 82 publications

Suppressing the scattering of WIMP dark matter and nucleons in supersymmetric theories

Suppressing the scattering of WIMP dark matter and nucleons in supersymmetric theories

Impact of leptonic unitarity and dark matter direct detection experiments on the NMSSM with inverse seesaw mechanism

Bayesian analysis of sneutrino dark matter in the NMSSM with a type-I seesaw mechanism

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