Naturalness of the non-universal MSSM in the light of the recent Higgs results

Antusch, Stefan; Calibbi, Lorenzo; Maurer, Vinzenz; Monaco, Maurizio; Spinrath, Martin

doi:10.1007/jhep01(2013)187

Cited by 54 publications

(30 citation statements)

References 91 publications

(150 reference statements)

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“…It has been observed that this can reduce the hierarchy problem through the appearance of a new "focus point" that makes the Higgs mass less sensitive to the gaugino mass scale [16][17][18][19][20][21][22][23][24][25][26]. Here we explore this possibility in detail for both the MSSM and GNMSSM in the context of the latest LHC bounds on SUSY states and the measurement of the Higgs mass.…”

Section: Jhep11(2013)209mentioning

confidence: 99%

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

Kaminska

Ross

Schmidt-Hoberg

2013

J. High Energ. Phys.

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For the case of the MSSM and the most general form of the NMSSM (GN-MSSM) we determine the reduction in the fine tuning that follows from allowing gaugino masses to be non-degenerate at the unification scale, taking account of the LHC8 bounds on SUSY masses, the Higgs mass bound, gauge coupling unification and the requirement of an acceptable dark matter density. We show that low-fine tuned points fall in the region of gaugino mass ratios predicted by specific unified and string models. For the case of the MSSM the minimum fine tuning is still large, approximately 1:60 allowing for a 3 GeV uncertainty in the Higgs mass (1:500 for the central value), but for the GNMSSM it is below 1:20. We find that the spectrum of SUSY states corresponding to the low-fine tuned points in the GNMSSM is often compressed, weakening the LHC bounds on coloured states. The prospect for testing the remaining low-fine-tuned regions at LHC14 is discussed.

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Section: Jhep11(2013)209mentioning

confidence: 99%

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

Kaminska

Ross

Schmidt-Hoberg

2013

J. High Energ. Phys.

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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: 66%

“…1 the resulting ∆ EW for the points of our scan, as defined by Eqs. (13,14). The orange points correspond to the observed Higgs mass, once a theoretical uncertainty of 3 GeV is taken into account: 122 GeV ≤ m h ≤ 128 GeV.…”

Section: Models With Low Tuning and Typical Spectramentioning

confidence: 99%

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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“…The original focus point allowed to obtain the proper electroweak symmetry breaking scale for large values of the squark and slepton masses and subleading values of the stop mixing parameter A t and gaugino masses M a . More recently, this solution was reconsidered, including the presence of large stop mixing A t [11], large (non universal) gaugino masses [12][13][14] and in the framework of gauge mediation [15,16].…”

Section: Jhep04(2014)093mentioning

confidence: 99%

General focus point in the MSSM

Delgado

Quirós

Wagner

2014

J. High Energ. Phys.

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Abstract:The minimal supersymmetric extension of the Standard Model (SM) is a well motivated scenario for physics beyond the SM, which allows a perturbative description of the theory up to scales of the order of the Grand Unification scale, where gauge couplings unify. The Higgs mass parameter is insensitive to the ultraviolet physics and is only sensitive to the scale of soft supersymmetry breaking parameters. Present collider bounds suggest that the characteristic values of these parameters may be significantly larger than the weak scale. Large values of the soft breaking parameters, however, induce large radiative corrections to the Higgs mass parameter and therefore the proper electroweak scale may only be obtained by a fine tuned cancellation between the square of the holomorphic µ parameter and the Higgs supersymmetry breaking square mass parameter. This can only be avoided if there is a correlation between the scalar and gaugino mass parameters, such that the Higgs supersymmetry breaking parameter remains of the order of the weak scale. The scale at which this happens is dubbed as focus point. In this article, we define the general conditions required for this to happen, for different values of the messenger scale at which supersymmetry breaking is transmitted to the observable sector, and for arbitrary boundary conditions of the sfermion, gaugino, and Higgs mass parameters. Specific supersymmetry breaking scenarios in which these correlations may occur are also discussed.

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Naturalness of the non-universal MSSM in the light of the recent Higgs results

Cited by 54 publications

References 91 publications

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

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

Low fine-tuning in Yukawa-deflected gauge mediation

General focus point in the MSSM

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