Non-universal gaugino masses and fine tuning implications for SUSY searches in the MSSM and the GNMSSM

Kaminska, Anna; Ross, Graham G.; Schmidt-Hoberg, Kai

doi:10.1007/jhep11(2013)209

Cited by 55 publications

(39 citation statements)

References 70 publications

(111 reference statements)

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“…However, this also makes it very difficult to test even in the long run. A similar conclusion is shared in the context of gravity mediation by grand unified theory (GUT) models with the non-universal gaugino masses induced by the breaking of the GUT group [12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 65%

Low fine-tuning in Yukawa-deflected gauge mediation

Ahmed

Mustafayev

et al. 2017

Phys. Rev. D

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We discuss a class of models with gauge-mediated supersymmetry breaking characterized by a non-unified messenger sector inducing non-standard gaugino mass ratios, as well as by additional contributions to the soft mass terms from a matter-messenger coupling. The well-known effect of this coupling is to generate A-terms at one-loop level, hence raising the Higgs mass without relying on super-heavy stops. At the same time, a hierarchy between Wino and gluino masses, as induced by the non-unified messenger fields, can greatly lower the radiative corrections to the Higgs soft mass term driven by the high-energy parameters, thus reducing the fine tuning. We search for models with low fine tuning within this scenario, and we discuss the spectrum, collider phenomenology, constraints, and prospects of the found solutions. We find that some setups are accessible or already excluded by searches at the Large Hadron Collider, and all our scenarios with a tuning better than about 2% can be tested at the International Linear Collider.

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Section: Introductionmentioning

confidence: 65%

Low fine-tuning in Yukawa-deflected gauge mediation

Ahmed

Mustafayev

et al. 2017

Phys. Rev. D

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“…[39][40][41][42][43][44][45][46][47][48][49]. In the present paper we remain agnostic about any such correlations and take purely phenomenological point of view and calculate the fine-tuning measure as a function of physical masses of sparticles.…”

Section: Jhep08(2018)080mentioning

confidence: 99%

Impact of an extra gauge interaction on naturalness of supersymmetry

Badziak

Harigaya

2018

J. High Energ. Phys.

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It is pointed out that in supersymmetric models with a new gauge symmetry under which the Higgs is charged, the fine-tuning of the electroweak symmetry breaking is relaxed due to suppression of the top Yukawa coupling at higher scales by a new large gauge coupling. We calculate the fine-tuning in an explicit model and find that the lower bounds on stops and gluino masses from the naturalness criterion are increased by several hundred GeV in comparison to the Minimal Supersymmetric Standard Model (MSSM). The fine-tuning is improved by one to two orders of magnitude as compared to the MSSM, as a consequence of both the suppression of the top Yukawa coupling and the additional tree-level contribution to the Higgs mass allowing for much lighter stops.

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“…The CP-violating version of the NMSSM also received some attention [65,66]. [67][68][69] analysed the fine-tuning in a Z 3 -violating version of the NMSSM and variants. Other groups confronted the presence of a Higgs state at this mass with direct searches for SUSY particles at the LHC or Dark-Matter constraints [70][71][72].…”

Section: Jhep04(2016)095mentioning

confidence: 99%

NMSSM interpretations of the observed Higgs signal

Domingo

Weiglein

2016

J. High Energ. Phys.

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While the properties of the signal that was discovered in the Higgs searches at the LHC are consistent so far with the Higgs boson of the Standard Model (SM), it is crucial to investigate to what extent other interpretations that may correspond to very different underlying physics are compatible with the current results. We use the Nextto-Minimal Supersymmetric Standard Model (NMSSM) as a well-motivated theoretical framework with a sufficiently rich Higgs phenomenology to address this question, making use of the public tools HiggsBounds and HiggsSignals in order to take into account comprehensive experimental information on both the observed signal and on the existing limits from Higgs searches at LEP, the TeVatron and the LHC. We find that besides the decoupling limit resulting in a single light state with SM-like properties, several other configurations involving states lighter or quasi-degenerate with the one at about 125 GeV turn out to give a competitive fit to the Higgs data and other existing constraints. We discuss the phenomenology and possible future experimental tests of those scenarios, and compare the features of specific scenarios chosen as examples with those arising from a more global fit.

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Non-universal gaugino masses and fine tuning implications for SUSY searches in the MSSM and the GNMSSM

Cited by 55 publications

References 70 publications

Low fine-tuning in Yukawa-deflected gauge mediation

Low fine-tuning in Yukawa-deflected gauge mediation

Impact of an extra gauge interaction on naturalness of supersymmetry

NMSSM interpretations of the observed Higgs signal

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