Confronting the moduli-induced lightest-superpartner problem

Blinov, Nikita; Kozaczuk, Jonathan; Menon, Arjun; Morrissey, David E.

doi:10.1103/physrevd.91.035026

Cited by 40 publications

(52 citation statements)

References 235 publications

(428 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…they allow increased naturalness; they can help enhance the Higgs mass without the danger of charge or colour breaking minima [42][43][44]; and can weaken both LHC search bounds [45][46][47] and flavour constraints [8,48,49].…”

Section: Introductionmentioning

confidence: 99%

Constrained minimal Dirac gaugino supersymmetric standard model

et al. 2014

View full text Add to dashboard Cite

We examine the possibilities for constructing models with Dirac gaugino masses and unification of gauge couplings. We identify one promising model, and discuss to what extent it can have a "natural SUSY" spectrum. We then determine the low-energy constraints upon it, and propose a constrained set of boundary conditions at the unification scale. We describe the implementation of these boundary conditions in the spectrum-generator generator SARAH and we perform a first exploration of the parameter space, specifically searching for points where the spectrum is relatively light. It is shown that the pattern of the masses of SUSY states is very different compared to any expectations from the constrained MSSM.

show abstract

Section: Introductionmentioning

confidence: 99%

Constrained minimal Dirac gaugino supersymmetric standard model

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Thus, alignment of the light Higgs boson occurring without the simultaneous decoupling of the heavier Higgs states is ruled out for this scenario. The alignment without decoupling limit can be pushed to lower values of tan β in this scenario, where the constraints from the φ → τ τ searches are less significant, only by choosing even more extreme values of μA t /M 2 Q , which potentially leads to problems with vacuum stability [82,83].…”

Section: Example Application: "Alignment Without Decoupling"mentioning

confidence: 99%

Applying exclusion likelihoods from LHC searches to extended Higgs sectors

et al. 2015

View full text Add to dashboard Cite

LHC searches for non-standard Higgs bosons decaying into tau lepton pairs constitute a sensitive experimental probe for physics beyond the Standard Model (BSM), such as supersymmetry (SUSY). Recently, the limits obtained from these searches have been presented by the CMS collaboration in a nearly model-independent fashion -as a narrow resonance model -based on the full 8 TeV dataset. In addition to publishing a 95 % C.L. exclusion limit, the full likelihood information for the narrow resonance model has been released. This provides valuable information that can be incorporated into global BSM fits. We present a simple algorithm that maps an arbitrary model with multiple neutral Higgs bosons onto the narrow resonance model and derives the corresponding value for the exclusion likelihood from the CMS search. This procedure has been implemented into the public computer code HiggsBounds (version 4.2.0 and higher). We validate our implementation by cross-checking against the official CMS exclusion contours in three Higgs benchmark scenarios in the Minimal Supersymmetric Standard Model (MSSM), and find very good agreement. Going beyond validation, we discuss the combined constraints of the τ τ search and the rate measurements of the SM-like Higgs at 125 GeV in a recently proposed MSSM benchmark scenario, where the lightest Higgs boson obtains SM-like couplings independently of the decoupling of the heavier Higgs states. Technical details for how to access the likelihood information within HiggsBounds a

show abstract

“…In order to reconcile the Higgs boson mass, large loop corrections are needed, these in general require heavy squarks (especially stops) and a large mixing, thus reintroducing a certain amount of fine-tuning to the theory [3]. Moreover, the parameter regions with maximal stop mixing which allow to obtain the observed Higgs mass potentially have a metastable electroweak vacuum, and predict a global minimum which breaks charge and/or color symmetries [4][5][6]. In scenarios where the number of free parameters is limited due to some relations at a high energy scale, heavy squarks imply heavy sleptons [7,8].…”

Section: Introductionmentioning

confidence: 99%

Dark matter in U(1) extensions of the MSSM with gauge kinetic mixing

2017

View full text Add to dashboard Cite

The gauge kinetic mixing in general is allowed in models with multiple Abelian gauge groups. In this paper, we investigate the gauge kinetic mixing in the framework of U(1) extensions of the MSSM. It enlarges the viable parameter space, and has an important effect on the particle mass spectrum as well as the Z 2 coupling with matters. The SM-like Higgs boson mass can be enhanced with a nonzero kinetic mixing parameter and the muon g − 2 tension is slightly less severe than in the case of no mixing. We present the results from both benchmark analysis and global parameter scan. Various theoretical and phenomenological constraints have been considered. The recent LHC searches for the Z 2 boson are important for the case of large positive kinetic mixing where the Z 2 coupling is enhanced, and severely constrain scenarios with M Z 2 < 2.8 TeV. The viable dark matter candidate predicted by the model is either the neutralino or the right-handed sneutrino. Cosmological constraints from dark matter searches play a significant role in excluding the parameter space. Portions of the parameter space with relatively low sparticle mass spectrum can be successfully explored in the LHC run-2 as well as future linear colliders and dark matter searches.

show abstract

Confronting the moduli-induced lightest-superpartner problem

Cited by 40 publications

References 235 publications

Constrained minimal Dirac gaugino supersymmetric standard model

Constrained minimal Dirac gaugino supersymmetric standard model

Applying exclusion likelihoods from LHC searches to extended Higgs sectors

Dark matter in U(1) extensions of the MSSM with gauge kinetic mixing

Contact Info

Product

Resources

About