The Higgs sector of the μνSSM and collider physics

Fidalgo, Javier; López-Fogliani, Daniel E.; Muñoz, Carlos; Austri, Roberto Ruiz de

doi:10.1007/jhep10(2011)020

Cited by 42 publications

(83 citation statements)

References 51 publications

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“…Models with broken R-parity and non-minimal superfield content, on the other hand, exhibit moderate or large displaced vertices with non-prompt jets or leptons in the final states (see, for example, Refs. [70,71]) with more complex Higgs cascade decays [71] and occasional correlations with neutrino physics [72] following [73], which can be used for discrimination. We also note that four leptons can be produced in h 0 3 decays, but with a very reduced production cross section.…”

Section: Higgs Signals With a Low-mass Pseudoscalar In The Nmssmmentioning

confidence: 99%

Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar

Cerdeño

Ghosh

Park

2013

J. High Energ. Phys.

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In this article we propose a simultaneous collider search strategy for a pair of scalar bosons in the NMSSM through the decays of a very light pseudoscalar. The massive scalar has a mass around 126 GeV while the lighter one can have a mass in the vicinity of 98 GeV (thus explaining an apparent LEP excess) or be much lighter. The successive decay of this scalar pair into two light pseudoscalars, followed by leptonic pseudoscalar decays, produces clean multi-lepton final states with small or no missing energy. Furthermore, this analysis offers an alternate leptonic probe for the 126 GeV scalar that can be comparable with the ZZ * search channel. We emphasize that a dedicated experimental search for multi-lepton final states can be an useful probe for this scenario and, in general, for the NMSSM Higgs sector. We illustrate our analysis with two representative benchmark points and show how the LHC configuration with 8 TeV center-of-mass energy and 25 fb −1 of integrated luminosity can start testing this scenario, providing a good determination of the light pseudoscalar mass and a relatively good estimation of the lightest scalar mass. *

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Section: Higgs Signals With a Low-mass Pseudoscalar In The Nmssmmentioning

confidence: 99%

Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar

Cerdeño

Ghosh

Park

2013

J. High Energ. Phys.

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“…Analyses of the SSM, with attention to the neutrino and LHC phenomenology, have also been addressed in [2,7,8,[11][12][13][14]. Other analyses concerning cosmology such as gravitino dark matter and electroweak baryogenesis can be found in [15,16], respectively.…”

mentioning

confidence: 99%

“…On the contrary, nonminimal SUSY models with 6 R p produce an irreducible imposter for this specific signal. Nevertheless, there exist other unique decay modes, for example, multilepton final states from long Higgs-to-Higgs cascades [13], which can provide a distinctive signal of the SSM because more Higgses are present. It is also worth remarking in this context that whereas the trilinear 6 R p terms in the SSM are useful for reproducing neutrino data at tree level and for solving the problem, trilinear 6 R p terms such asL iLjÊ c k do not attempt to solve the problem and generate neutrino masses only through loops.…”

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confidence: 99%

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Probing theμ-from-νsupersymmetric standard model with displaced multileptons from the decay of a Higgs boson at the LHC

et al. 2013

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The '' from '' supersymmetric standard model ( SSM) cures the problem and concurrently reproduces measured neutrino data by using a set of usual right-handed neutrino superfields. Recently, the LHC has revealed the first scalar boson which naturally makes it tempting to test SSM in the light of this new discovery. We show that this new scalar, while decaying to a pair of unstable long-lived neutralinos, can lead to a distinct signal with nonprompt multileptons. With concomitant collider analysis we show that this signal provides an intriguing signature of the model, pronounced with light neutralinos. Evidence of this signal is well envisaged with sophisticated displaced vertex analysis, which deserves experimental attention. The simultaneous presence of the last three terms in Eq.(1) gives rise to explicit breaking of R parity (R p ). With only dimensionless trilinear couplings in W, the electroweak (EW) scale arises through the soft supersymmetry (SUSY)-breaking terms in the scalar potential. Thus all known particle physics phenomenology can be reproduced in the SSM with only one scale. Once the EW symmetry is spontaneously broken, the neutral scalars develop, in general, the following vacuum expectation values (VEVs): rise to a TeV-scale seesaw with Y $ 10 À6 (like Y e ) and, together with R p violation (6 R p ), are instrumental in reproducing the measured neutrino mass squared differences and mixing angles [2,[6][7][8] at the tree level. This feature is unlike the bilinear 6 R p model [9] where only one mass is generated at the tree level and loop corrections are necessary to generate at least a second mass and a neutrino mixing matrix compatible with experiments. In the bilinear model, the -like problem [10] is also augmented with three bilinear terms.In the SSM as a consequence of the 6 R p , all the neutral fermions (scalars) mix together and there are 10 neutralino (8 CP-even and 7 CP-odd) mass eigenstates. Analyses of the SSM, with attention to the neutrino and LHC phenomenology, have also been addressed in [2,7,8,[11][12][13][14]. Other analyses concerning cosmology such as gravitino dark matter and electroweak baryogenesis can be found in [15,16], respectively.Thus the SSM is a well-motivated SUSY model with enriched phenomenology and notable signatures, which definitely deserve rigorous analyses by the LHC Collaboration. However, although SUSY searches remain one of the primary targets for the LHC, the discovery of a new scalar boson with a mass around 125 GeV by the ATLAS [17] and CMS [18] collaborations has attracted the attention of the community. In spite of the observed decay rates of this particle being compatible with those of the standard model (SM) Higgs boson, a departure from the SM predictions remains a possibility since new LHC data are being analyzed.We present a dedicated collider analysis together with detector simulation of an intriguing signal in the SSM featuring nonprompt multileptons at the LHC, arising from the beyond SM decay of a 125 GeV scalar into a pair of lightest neutrali...

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“…This unusual phenomenology was explored first in Refs. [9,12,13,14], discussing the decay properties of the LSP assumed to be the lightest neutralino, as well as novel Higgs decays. Further, detailed collider analyses for a Higgs-like scalar decaying into a pair of neutralinos was also discussed in Refs.…”

Section: Lhc Phenomenologymentioning

confidence: 99%

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

Muñoz¹

2016

Proceedings of 11th International Workshop Dark Side of the Universe 2015 — PoS(DSU2015)

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The 'µ from ν' supersymmetric standard model (µνSSM) solves the µ problem of supersymmetric models and reproduces neutrino data, simply using couplings with the three families of right-handed neutrinos ν's. Novel signatures of supersymmetry at the LHC are expected through these new states, and couplings breaking R parity. All supersymmetric particles are potential candidates for the lightest one, which is not stable leading to prompt of displaced vertices and producing final states with multi-leptons/taus/jets/photons and missing energy. Besides, a decaying gravitino turns out to be an interesting candidate for dark matter. It can be searched through gamma-ray observations, such as those of the Fermi Large Area Telescope. The latter already impose an upper bound on the gravitino mass of the order of 5-20 GeV, depending on the region of the parameter space of the model.

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The Higgs sector of the μνSSM and collider physics

Cited by 42 publications

References 51 publications

Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar

Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar

Probing theμ-from-νsupersymmetric standard model with displaced multileptons from the decay of a Higgs boson at the LHC

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

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