Enhanced Higgs mass in a gaugino mediation model without the Polonyi problem

Moroi, Takeo; Yanagida, Tsutomu T.; Yokozaki, Norimi

doi:10.1016/j.physletb.2013.01.010

Cited by 11 publications

(7 citation statements)

References 59 publications

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“…There we only introduce a pair of 5 + 5 multiplets in our numerical analysis. If many pairs of 5 + 5 and 10+10 are introduced and the constrained MSSM spectrum is assumed, the observed Higgs mass is realized as the framework of the large A-term scenario even without large soft masses for extra matters [16,17], though the stop masses are heavier. Introduction of the larger multiplets or many fields would make our points unclear, so we consider the case of a pair of 5 + 5 multiplets.…”

Section: Modelmentioning

confidence: 99%

Light stops, heavy Higgs, and heavy gluinos in supersymmetric standard models with extra matters

Hisano

Kuramoto

Kuwahara

2017

Progress of Theoretical and Experimental Physics

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We have explored the possibilities of scenarios with heavy gluinos and light stops in supersymmetric (SUSY) standard models with extra vector-like multiplets. If we assume the hierarchical structure for soft masses of the minimal supersymmetric standard model (MSSM) scalar fields and extra scalars, the light stop and the observed Higgs boson can be realized. While the stau is the lightest SUSY particle (LSP) in broad parameter space, we have found that the neutralino LSP is realized in the case that the non-zero soft parameters for the MSSM Higgs doublets or the non-universal gaugino masses are assumed. arXiv:1611.07670v2 [hep-ph] 5 Apr 2017Supersymmetry (SUSY) is one of the promising extensions of the standard model (SM). New particles, with opposite spin statistics to the SM particles, are naturally introduced by extending spacetime to one with Grassmann coordinates. If these new particles, called sparticles, lie around the TeV scale, SUSY provides us with some phenomenological implications. The lightest supersymmetric particle (LSP) may explain the dark matter abundance in the universe. The gauge coupling unification also works well, and is compatible with grand unification theories (GUTs).The ATLAS and CMS collaborations found a scalar boson consistent with the SM Higgs boson [1,2], and reported that its mass is around 125 GeV [3]. In the minimal supersymmetric standard model (MSSM), the light Higgs boson mass is bounded from above at tree level. To explain the observed Higgs boson mass, several ideas have been proposed: the introduction of large quantum corrections to the light Higgs mass, adding vector-like extra matters [4,5], pushing up the SUSY breaking scale [6,7], realizing large A-term or next-to-MSSM [8], and so on.There is also no signal of sparticles and no significant deviation from the SM predictions at the LHC experiments (e.g., see Refs. [9,10]). In particular, the masses of new colored particles are severely constrained; for instance, gluinos should be heavier than about 1.9 TeV in a simplified mass spectrum [11].Heavy gluinos naïvely indicate heavy squarks at the low-energy scale. In fact, in order to obtain the heavy gluinos at the low-energy scale, we require a large value for the gluino mass at an initial scale (such as the GUT scale ∼ 10 16 GeV or the Planck scale ∼ 10 18 GeV). According to renormalization group equation (RGE) analysis, heavy gluinos at the input scale lead to heavy squarks and a large A-term at the one-loop order in the MSSM. The heavy stop is unfavorable from the naturalness point of view since it requires fine-tuning between the soft mass and the supersymmetric mass for the up-type MSSM Higgs doublet.There are other things to be considered in the supersymmetric extended models: SUSY flavor problems. To suppress the flavor-changing neutral current (FCNC) processes, it is required that the sfermion masses for the first two generations are degenerate, decoupled, and/or aligned. Many models have been constructed assuming that SUSY breaking is mediated by gauge interactions...

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Section: Modelmentioning

confidence: 99%

Light stops, heavy Higgs, and heavy gluinos in supersymmetric standard models with extra matters

Hisano

Kuramoto

Kuwahara

2017

Progress of Theoretical and Experimental Physics

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“…[3], the existence of the light vector-like matter fields have significant effects on SUSY particle masses in gaugino mediation: 1) squark/gluino mass ratios as well as 2) A-term/squark mass ratio are enhanced. As a result, the predicted gluino mass becomes significantly smaller than that without vector-like matter fields since the observed Higgs boson mass does not require the heavy gluino.…”

Section: Susy Mass Spectra In Gaugino Mediationmentioning

confidence: 99%

“…In fact, vector-like multiplets around TeV scale significantly change the SUSY mass spectrum at the low-energy, due to remarkable changes of gauge and gaugino beta-functions [3]: at the low-energy, ratios of sfermion masses to gaugino masses become much larger than those evaluated in MSSM. Moreover, the stop trilinear coupling becomes large.…”

Section: Introductionmentioning

confidence: 99%

Implications of the 750 GeV diphoton excess in gaugino mediation

2016

Self Cite

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The 750 GeV diphoton excess reported by ATLAS and CMS indicates the presence of several pairs of the vector-like matter multiplets around TeV scale. If that is the case, radiative corrections from the SU (3) gauge interaction significantly change from those of MSSM, and the infrared-free nature of the gauge interaction leads to characteristic SUSY mass spectra: a ratio of a squark mass to the gluino mass, and scalar trilinear couplings are enhanced at the low-energy scale. Consequently, even in gaugino mediation models, the Higgs boson mass of 125 GeV is explained with the fairly light gluino of 2-3 TeV, which can be accessible at the LHC.

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“…For the 125 GeV Higgs, tan β 10 is favored for the stop mass with a few TeV [3][4][5][6][7][8][9]. Finally, R-axions can decay to a pair of gravitinos through supergravity effect, Decay rate is given by…”

Section: Jcap01(2014)024mentioning

confidence: 99%

“…Since SUSY has not been observed in experiments yet, it has to be broken somewhere between the weak scale and the Planck scale. Recent discovery of a Higgs boson at the LHC [1,2] may suggest that the stop mass is around O (10) TeV without introducing an artificial new mechanism [3][4][5][6][7][8][9], in particular, in models of gauge mediation, which is the main topic in this paper. Although it is not at the right scale for solving the naturalness problem, 1 other good points of SUSY encourage us to study it further.…”

Section: Introductionmentioning

confidence: 99%

More on cosmological constraints on spontaneous R-symmetry breaking models

Hamada

Kamada

Kobayashi

et al. 2014

J. Cosmol. Astropart. Phys.

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We study the spontaneous R-symmetry breaking model and investigate the cosmological constraints on this model due to the pseudo Nambu-Goldstone boson, R-axion. We consider the R-axion which has relatively heavy mass in order to complement our previous work. In this regime, model parameters, R-axions mass and R-symmetry breaking scale, are constrained by Big Bang Nucleosynthesis and overproduction of the gravitino produced from R-axion decay and thermal plasma. We find that the allowed parameter space is very small for high reheating temperature. For low reheating temperature, the U(1) R breaking scale f a is constrained as f a < 10 12−14 GeV regardless of the value of R-axion mass.

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Enhanced Higgs mass in a gaugino mediation model without the Polonyi problem

Cited by 11 publications

References 59 publications

Light stops, heavy Higgs, and heavy gluinos in supersymmetric standard models with extra matters

Light stops, heavy Higgs, and heavy gluinos in supersymmetric standard models with extra matters

Implications of the 750 GeV diphoton excess in gaugino mediation

More on cosmological constraints on spontaneous R-symmetry breaking models

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