Differentiating<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>U</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1</mml:mn><mml:msup><mml:mrow><mml:mo stretchy="false">)</mml:mo></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>supersymmetric models with right sneutrino and neutralino dark matter

Araz, Jack Y.; Frank, Mariana; Fuks, Benjamin

doi:10.1103/physrevd.96.015017

Cited by 16 publications

(18 citation statements)

References 78 publications

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“…We observe, similarly to the findings of Ref. [27], that only |θ E 6 | values in the intervals [0, π/4] and [3/4π, π] can accommodate all the imposed experimental constraints. Outside of these regions, the U (1) charge of the extra singlet supermultiplet S is in fact close to zero so that either the SM-like Higgs boson or the Z boson, or even both, are predicted to be too light with respect to current data.…”

Section: Scenarios With High-scale Boundary Conditionssupporting

confidence: 89%

“…As discussed, e.g., in Refs. [25,27], U (1) χ models are ill-defined in supersymmetry as it they typically lead to unphysical sfermion masses after adding to the soft masses the D-term contributions. As to U (1) S , it may be theoretically acceptable, but we were not able to find scenarios capable of satisfying the constraints of Table 4.…”

Section: Scenarios With High-scale Boundary Conditionsmentioning

confidence: 99%

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Loopholes in Z′ searches at the LHC: exploring supersymmetric and leptophobic scenarios

Araz

Corcella

Frank

et al. 2018

J. High Energ. Phys.

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Searching for heavy vector bosons Z , predicted in models inspired by Grand Unification Theories, is among the challenging objectives of the LHC. The ATLAS and CMS collaborations have looked for Z bosons assuming that they can decay only into Standard Model channels, and have set exclusion limits by investigating dilepton, dijet and, to a smaller extent, top-antitop final states. In this work we explore possible loopholes in these Z searches, by studying supersymmetric as well as leptophobic scenarios. We demonstrate the existence of realizations in which the Z boson automatically evades the typical bounds derived from the analyses of the Drell-Yan invariant-mass spectrum. Dileptonic final states can in contrast only originate from supersymmetric Z decays and are thus accompanied by additional effects. This feature is analyzed in the context of judiciously chosen benchmark configurations, for which visible signals could be expected in future LHC data with a 4σ − 7σ significance. Our results should hence motivate an extension of the current Z search program to account for supersymmetric and leptophobic models.

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Section: Scenarios With High-scale Boundary Conditionssupporting

confidence: 89%

Section: Scenarios With High-scale Boundary Conditionsmentioning

confidence: 99%

Loopholes in Z′ searches at the LHC: exploring supersymmetric and leptophobic scenarios

Araz

Corcella

Frank

et al. 2018

J. High Energ. Phys.

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“…These inequations show that the ratio 33 is least constrained when λ, µ and v u (or alternatively tan β) are fixed. Besides the inputs λ, κ, µ and tan β in Higgs sector, the sneutrino sector in the ISS-NMSSM involves the parameters Y ν , λ ν , A ν , A λν , µ X , B µ X and the soft breaking masses ml, mν and mx.…”

Section: Sneutrino Sector Of the Iss-nmssmmentioning

confidence: 97%

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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“…The SU (2) R triplet scalar masses are allowed to be even smaller than the heaviest right-handed neutrino mass. Right-handed neutrinos could nevertheless be indirectly constrained by neutrinoless double-beta decays and cosmology [114][115][116].…”

Section: Numerical Analysis and Resultsmentioning

confidence: 99%

Phenomenological study of texture zeros in lepton mass matrices of minimal left-right symmetric model

Borgohain

Das

Borah

2019

J. High Energ. Phys.

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We consider the possibility of texture zeros in lepton mass matrices of the minimal left-right symmetric model (LRSM) where light neutrino mass arises from a combination of type I and type II seesaw mechanisms. Based on the allowed texture zeros in light neutrino mass matrix from neutrino and cosmology data, we make a list of all possible allowed and disallowed texture zeros in Dirac and heavy neutrino mass matrices which appear in type I and type II seesaw terms of LRSM. For the numerical analysis we consider those cases with maximum possible texture zeros in light neutrino mass matrix M ν , Dirac neutrino mass matrix M D , heavy neutrino mass matrix M RR while keeping the determinant of M RR non-vanishing, in order to use the standard type I seesaw formula. The possibility of maximum zeros reduces the free parameters of the model making it more predictive. We then compute the new physics contributions to rare decay processes like neutrinoless double beta decay, charged lepton flavour violation. We find that even for a conservative lower limit on left-right symmetry scale corresponding to heavy charged gauge boson mass 4.5 TeV, in agreement with collider bounds, for right-handed neutrino masses above 1 GeV, the new physics contributions to these rare decay processes can saturate the corresponding experimental bound. * happy@tezu.ernet.in † mkdas@tezu.ernet.in ‡ dborah@iitg.ac.in

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DifferentiatingU(1)′supersymmetric models with right sneutrino and neutralino dark matter

Cited by 16 publications

References 78 publications

Loopholes in Z′ searches at the LHC: exploring supersymmetric and leptophobic scenarios

Loopholes in Z′ searches at the LHC: exploring supersymmetric and leptophobic scenarios

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

Phenomenological study of texture zeros in lepton mass matrices of minimal left-right symmetric model

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