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

Banerjee, Shankha; Dev, P. S. Bhupal; Mondal, Subhadeep; Mukhopadhyaya, Biswarup; Roy, Sourov

doi:10.1007/jhep10(2013)221

Cited by 35 publications

(25 citation statements)

References 206 publications

(252 reference statements)

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“…In low-scale SUSY seesaw models, the lightest superpartner of the RH neutrino with a small admixture of its LH counterpart could be another viable candidate for DM, if it happens to be the lightest supersymmetric particle (LSP) [354,[373][374][375][376][377]. The sneutrino LSP scenario leads to distinct collider signatures, such as long missing transverse energy tail and enhanced same-sign dilepton signal in gluino and squark cascade decays [378][379][380][381][382], unlike the neutralino LSP in the MSSM scenario.…”

Section: Supersymmetric Seesawmentioning

confidence: 99%

Neutrinos and collider physics

2015

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We review the collider phenomenology of neutrino physics and the synergetic aspects at energy, intensity and cosmic frontiers to test the new physics behind the neutrino mass mechanism. In particular, we focus on seesaw models within the minimal setup as well as with extended gauge and/or Higgs sectors, and on supersymmetric neutrino mass models with seesaw mechanism and with Rparity violation. In the simplest type-I seesaw scenario with sterile neutrinos, we summarize and update the current experimental constraints on the sterile neutrino mass and its mixing with the active neutrinos. We also discuss the future experimental prospects of testing the seesaw mechanism at colliders and in related low-energy searches for rare processes, such as lepton flavor violation and neutrinoless double beta decay. The implications of the discovery of lepton number violation at the Large Hadron Collider for leptogenesis are also studied.

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Section: Supersymmetric Seesawmentioning

confidence: 99%

Neutrinos and collider physics

2015

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“…Frequently considered examples are Majorons [25,27,243] as well as more general PNGBs [244]; hidden sectors [30][31][32]245,246]; fourthgeneration neutrinos [247,248]; and right-handed neutrinos [249] and their Kaluza-Klein excitations [237] or superpartners [250].…”

Section: A Theoretical Motivationmentioning

confidence: 99%

Exotic decays of the 125 GeV Higgs boson

et al. 2014

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We perform an extensive survey of nonstandard Higgs decays that are consistent with the 125 GeV Higgs-like resonance. Our aim is to motivate a large set of new experimental analyses on the existing and forthcoming data from the Large Hadron Collider (LHC). The explicit search for exotic Higgs decays presents a largely untapped discovery opportunity for the LHC collaborations, as such decays may be easily missed by other searches. We emphasize that the Higgs is uniquely sensitive to the potential existence of new weakly coupled particles and provide a unified discussion of a large class of both simplified and complete models that give rise to characteristic patterns of exotic Higgs decays. We assess the status of exotic Higgs decays after LHC run I. In many cases we are able to set new nontrivial constraints by reinterpreting existing experimental analyses. We point out that improvements are possible with dedicated analyses and perform some preliminary collider studies. We prioritize the analyses according to their theoretical motivation and their experimental feasibility. This document is accompanied by a Web site that will be continuously updated with further information [http://exotichiggs.physics .sunysb.edu].

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“…However, the heaviness of the soft spectrum, owing to a relatively heavy Higgs boson and null sparticle searches, along with the stringent bounds from direct detection experiments such as XENON100 [18], 4 now threaten the viable neutralino DM. Another neutral LSP candidate, the lightest sneutrino, has been investigated by many authors in many contexts [14][15][16][17][27][28][29], and now may show some advantages.…”

Section: A Complex Sneutrino Lsp In the Iss-mssmmentioning

confidence: 99%

Higgs boson mass and complex sneutrino dark matter in the supersymmetric inverse seesaw models

Guo

Kang

et al. 2014

J. High Energ. Phys.

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The discovery of a relatively heavy Standard Model (SM)-like Higgs boson challenges naturalness of the minimal supersymmetric standard model (MSSM) from both Higgs and dark matter (DM) sectors. We study these two aspects in the MSSM extended by the low-scale inverse seesaw mechanism. Firstly, it admits a sizable radiative contribution to the Higgs boson mass m h , up to ∼ 4 GeV in the case of an IR-fixed point of the coupling Y ν LH u ν c and a large sneutrino mixing. Secondly, the lightest sneutrino, highly complex as expected, is a viable thermal DM candidate. Owing to the correct DM relic density and the XENON100 experimental constraints, two scenarios survive: a Higgs-portal complex DM with mass lying around the Higgs pole or above W threshold, and a coannihilating DM with slim prospect of detection. Given an extra family of sneutrinos, both scenarios naturally work when we attempt to suppress the DM left-handed sneutrino component, confronting with enhancing m h .

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

Cited by 35 publications

References 206 publications

Neutrinos and collider physics

Neutrinos and collider physics

Exotic decays of the 125 GeV Higgs boson

Higgs boson mass and complex sneutrino dark matter in the supersymmetric inverse seesaw models

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