Searching for SUSY and decaying gravitino dark matter at the LHC and Fermi-LAT with the $\mu\nu$SSM

Muñoz, Carlos

doi:10.22323/1.268.0034

Cited by 8 publications

(13 citation statements)

References 22 publications

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“…(12)- (15) and the CP-even and CP-odd mass matrix elements in Eqs. (16) and (17). The following parameters appear in the Higgs potential: …”

Section: Renormalization Of the Higgs Potential At One-loopmentioning

confidence: 99%

“…Since the singlet of the NMSSM and the right-handed sneutrino of the μνSSM are both gauge-singlets, they share very similar properties. However, the explanation of the excesses in the μνSSM avoids bounds from direct detection experiments, because R-parity is broken in the μνSSM and the dark matter candidate is not a neutralino as in the NMSSM but a gravitino with a lifetime longer than the age of the universe [16]. This is important because the direct detection measurements were shown to be very constraining in the NMSSM while trying to explain the dark matter abundance on top of the excesses from LEP and CMS [114].…”

Section: The μνSsm and The Cms γ γ Excess At 96 Gevmentioning

confidence: 99%

“…[15][16][17] for reviews). The μνSSM is the simplest extension of the MSSM that can provide massive neutrinos through a see-saw mechanism at the electroweak scale.…”

Section: Introductionmentioning

confidence: 99%

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Precise prediction for the Higgs-boson masses in the $$\mu \nu $$ μ ν SSM

2018

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The μνSSM is a simple supersymmetric extension of the Standard Model (SM) capable of predicting neutrino physics in agreement with experiment. In this paper we perform the complete one-loop renormalization of the neutral scalar sector of the μνSSM with one generation of right-handed neutrinos in a mixed on-shell/DR scheme. The renormalization procedure is discussed in detail, emphasizing conceptual differences to the minimal (MSSM) and next-to-minimal (NMSSM) supersymmetric standard model regarding the field renormalization and the treatment of nonflavor-diagonal soft mass parameters, which have their origin in the breaking of R-parity in the μνSSM. We calculate the full one-loop corrections to the neutral scalar masses of the μνSSM. The one-loop contributions are supplemented by available MSSM higher-order corrections. We obtain numerical results for a SM-like Higgs boson mass consistent with experimental bounds. We compare our results to predictions in the NMSSM to obtain a measure for the significance of genuine μνSSM-like contributions. We only find minor corrections due to the smallness of the neutrino Yukawa couplings, indicating that the Higgs boson mass calculations in the μνSSM are at the same level of accuracy as in the NMSSM. Finally we show that the μνSSM can accomodate a Higgs boson that could explain an excess of γ γ events at ∼ 96 GeV as reported by CMS, as well as the 2 σ excess of bb events observed at LEP at a similar mass scale.

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“…(12)- (15) and the CP-even and CP-odd mass matrix elements in Eqs. (16) and (17). The following parameters appear in the Higgs potential: …”

Section: Renormalization Of the Higgs Potential At One-loopmentioning

confidence: 99%

Section: The μνSsm and The Cms γ γ Excess At 96 Gevmentioning

confidence: 99%

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Precise prediction for the Higgs-boson masses in the $$\mu \nu $$ μ ν SSM

2018

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“…For example, in the next-to-minimal supersymmetric standard model (NMSSM) [26] one extra singlet superfieldN is included in order to solve the µ problem [27]. In the µνSSM [23,28], the µ problem is solved using three families of right-handed neutrino superfieldsν c L , simultaneously reproducing at the tree level the correct neutrino physics [23,[29][30][31][32][33][34]. In this model, since R-parity is explicitly violated, all fields with the same quantum numbers mix together, and in particular the Higgses H u and H d turn out to be mixed with the right and left sneutrinos, ν R and ν L , although the mixing with the left ones is very small and they are basically decoupled.…”

Section: Jhep06(2017)095mentioning

confidence: 99%

Novel signatures for vector-like quarks

Aguilar-Saavedra

López-Fogliani

Muñoz

2017

J. High Energ. Phys.

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Abstract:We consider supersymmetric extensions of the standard model with a vectorlike doublet (T B) of quarks with charge 2/3 and −1/3, respectively. Compared to nonsupersymmetric models, there is a variety of new decay modes for the vector-like quarks, involving the extra scalars present in supersymmetry. The importance of these new modes, yielding multi-top, multi-bottom and also multi-Higgs signals, is highlighted by the analysis of several benchmark scenarios. We show how the triangles commonly used to represent the branching ratios of the 'standard' decay modes of the vector-like quarks involving W , Z or Higgs bosons can be generalised to include additional channels. We give an example by recasting the limits of a recent heavy quark search for this more general case.

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“…As a result of the heavy mixing occurring within the neutral and charged sectors, the µνSSM presents a very rich phenomenology, markedly different from the usual collider scenarios [20][21][22][23][24][25][26]. This means not only that new parameter regions open up for SUSY searches but also that the µνSSM model predictions could have escaped unnoticed so far.…”

Section: Introductionmentioning

confidence: 99%

The non-Universal U(1) gauge extended μνSSM: anomalies cancellation and singular phenomenology

Lozano¹,

Oviedo-Casado

2018

J. High Energ. Phys.

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So far the most sophisticated experiments have shown no trace of new physics at the TeV scale. Consequently, new models with unexplored parameter regions are necessary to explain current results, re-examine the existing data, and propose new experiments. In this Letter, we present a modified version of the µνSSM supersymmetric model where a non-Universal extra U(1) gauge symmetry is added in order to restore an effective R-parity that ensures proton stability. We show that anomalies equations cancel without having to add any exotic matter, restricting the charges of the fields under the extra symmetry to a discrete set of values. We find that it is the viability of the model through anomalies cancellation what defines the conditions in which fermions interact with dark matter candidates via the exchange of Z bosons. The strict condition of universality violation means that LHC constraints for a Z mass do not apply directly to our model, allowing for a yet undiscovered relatively light Z', as we discuss both in the phenomenological context and in its implications for possible flavour changing neutral currents. Moreover, we explore the possibility of isospin violating dark matter interactions; we observe that this interaction depends, surprisingly, on the Higgs charges under the new symmetry, both limiting the number of possible models and allowing to analyse indirect dark matter searches in the light of well defined, particular scenarios. *

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Searching for SUSY and decaying gravitino dark matter at the LHC and Fermi-LAT with the $\mu\nu$SSM

Cited by 8 publications

References 22 publications

Precise prediction for the Higgs-boson masses in the $$\mu \nu $$ μ ν SSM

Precise prediction for the Higgs-boson masses in the $$\mu \nu $$ μ ν SSM

Novel signatures for vector-like quarks

The non-Universal U(1) gauge extended μνSSM: anomalies cancellation and singular phenomenology

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