Probing the electroweakino sector of general gauge mediation at the LHC

Kim, Jong Soo; Krauss, Manuel E.; Lozano, Víctor Martín

doi:10.1016/j.physletb.2018.06.010

Cited by 7 publications

(6 citation statements)

References 97 publications

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“…ATLAS and CMS searches targeting final states with photons and missing transverse momentum might have sensitivity as it was shown in Ref. [134]. Such searches currently focus on GMSB-inspired scenarios, where the lightest electroweakino (typically a bino or wino) decays into a photon and the almost massless gravitino.…”

Section: Outlook For the Lhc-hl Phase And Alternative Search Chanmentioning

confidence: 99%

Confronting the neutralino and chargino sector of the NMSSM with the multilepton searches at the LHC

Domingo

Kim

Lozano³

et al. 2020

Phys. Rev. D

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We test the impact of the ATLAS and CMS multi-lepton searches performed at the LHC with 8 as well as 13 TeV center-of-mass energy (using only the pre-2018 results) on the chargino and neutralino sector of the NMSSM. Our purpose consists in analyzing the actual reach of these searches for a full model and in emphasizing effects beyond the MSSM that affect the performance of current (MSSMinspired) electroweakino searches. To this end, we consider several scenarios characterizing specific features of the NMSSM electroweakino sector. We then perform a detailed collider study, generating Monte-Carlo events through Pythia and testing against current LHC constraints implemented in the public tool CheckMATE. We find e.g. that SUSY decay chains involving intermediate singlino or Higgs-singlet states can modify the naive MSSM-like picture of the constraints by inducing finalstates with softer or less-easily identifiable SM particles -reversely, a compressed configuration with singlino NLSP occasionally induces final states that are rich with photons, which could provide complementary search channels.

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Section: Outlook For the Lhc-hl Phase And Alternative Search Chanmentioning

confidence: 99%

Confronting the neutralino and chargino sector of the NMSSM with the multilepton searches at the LHC

Domingo

Kim

Lozano³

et al. 2020

Phys. Rev. D

Self Cite

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“…on the corresponding LHC signatures 1 [17,18] (for a similar analysis based on the Tevatron data see refs. [19,20]).…”

Section: Jhep09(2019)082mentioning

confidence: 87%

Gravitino vs. neutralino LSP at the LHC

Kim

Pokorski

Rolbiecki

et al. 2019

J. High Energ. Phys.

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Using the latest LHC data, we analyse and compare the lower limits on the masses of gluinos and the lightest stop in two natural supersymmetric motivated scenarios: one with a neutralino being the lightest supersymmetric particle (LSP) and the other one with gravitino as the LSP and neutralino as the next-to-lightest supersymmetric particle. In the second case our analysis applies to neutralinos promptly decaying to very light gravitinos, which are of cosmological interest, and are generic for low, of order O(100) TeV, messenger scale in gauge mediation models. We find that the lower bounds on the gluino and the lightest stop masses are stronger for the gravitino LSP scenarios due to the extra handle from the decay products of neutralinos. Generally, in contrast to the neutralino LSP case the limits now extend to a region of compressed spectrum. In bino scenarios the highest excluded stop mass increases from 1000 GeV to almost 1400 GeV. Additionally, in the higgsino-like NLSP scenario the higgsinos below 650 GeV are universally excluded and the stop mass limit is mt > 1150 GeV, whereas there is no limit on stops in the higgsino LSP model for mh = 650 GeV. Nevertheless, we find that the low messenger scale still ameliorates the fine tuning in the electroweak potential.

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“…While within the paradigm of the MSSM, the lightest neutralino is the LSP, and most supersymmetric searches are based on the same assumption. There have been studies with gravitino LSP, discussing implications on cosmology and signatures at the LHC [34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53]. In other simple extensions, axion and/or axino as the LSP [54][55][56][57][58] and right-sneutrino LSP have also been considered in minimal extensions of the MSSM [59][60][61][62][63][64][65][66][67][68][69][70].…”

Section: Introductionmentioning

confidence: 99%

Natural SUSY at LHC with right-sneutrino LSP

Chatterjee

Dutta

Kumar

2018

J. High Energ. Phys.

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Abstract:We study an extension of the minimal supersymmetric standard model (MSSM) with additional right-handed singlet neutrino superfields. While such an extension incorporates a mechanism for the neutrino mass, it also opens up the possibility of having the right-sneutrinos ( ν) as the lightest supersymmetric particle (LSP). In this work, we focus on the viability of rather small ( 500 GeV) higgsino mass parameter (µ), an important ingredient for "naturalness", in the presence of such a LSP. For simplicity, we assume that the bino and wino mass parameters are much heavier; thus we only consider (almost) pure and compressed higgsino-like states, with small O(10 −2 ) gaugino admixture which nevertheless still affect the decay of the low-lying higgsino-like states, thus significantly affecting the proposed signatures at colliders. Considering only prompt decays of the higgino-like states, especially the lightest chargino, we discuss the importance of leptonic channels consisting of up to two leptons with large missing transverse energy to probe this scenario at the Large Hadron Collider (LHC). In addition we also comment on the dark matter predictions for the studied scenario.

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Probing the electroweakino sector of general gauge mediation at the LHC

Cited by 7 publications

References 97 publications

Confronting the neutralino and chargino sector of the NMSSM with the multilepton searches at the LHC

Confronting the neutralino and chargino sector of the NMSSM with the multilepton searches at the LHC

Gravitino vs. neutralino LSP at the LHC

Natural SUSY at LHC with right-sneutrino LSP

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