Reduction of couplings and heavy top quark in the minimal SUSY GUT

Kubo, Jisuke; Mondragón, Myriam; Zoupanos, George

doi:10.1016/0550-3213(94)90296-8

Cited by 89 publications

(171 citation statements)

References 53 publications

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“…This motivates us to assume that the relation for M also remains unchanged, which is true only if the contribution to the gauge kinetic function f coming from the massive states [45] are absent. It is known [45] (see also [27]) that such situation appears for the class of orbifold models in which the massive states are organized into N = 4 supermultiplets 5 and we obtain One can easily convince oneself that if the condition (23) is satisfied, the 5 The absence of the threshold effects coming from N = 4 massive supermultiplets has been first observed in an N = 4 Yang-Mills theory with spontaneously broken gauge symmetry [46].…”

Section: Coincidencementioning

confidence: 99%

Constraints on Finite Soft Supersymmetry Breaking Terms

Kobayashi¹,

Kubo²,

Mondragón³

et al. 1999

International Europhysics Conference on High Energy Physics

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Requiring the soft supersymmetry-breaking (SSB) parameters in finite gauge-Yukawa unified models to be finite up to and including two-loop order, we derive a two-loop sum rule for the soft scalar-masses. It is shown that this sum rule coincides with that of a certain class of string models in which the massive string states are organized into N = 4 supermultiplets. We investigate the SSB sector of two finite SU(5) models. Using the sum rule which allows the non-universality of the SSB terms and requiring that the lightest superparticle particleis neutral, we constrain the parameter space of the SSB sector in each model.

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Section: Coincidencementioning

confidence: 99%

Constraints on Finite Soft Supersymmetry Breaking Terms

Kobayashi¹,

Kubo²,

Mondragón³

et al. 1999

International Europhysics Conference on High Energy Physics

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“…Application of this procedure to dimensionless couplings of supersymmetric GUTs has led to the correct prediction of top quark mass in the finite and in the minimal N = 1 supersymmetric SU(5) GUTs [2,3]. The most impressive aspect of the RGI relations is that they are valid to all orders of perturbation theory, a fact that can be realized by exploring the uniqueness of these relations at 1-loop level [1].…”

Section: Introductionmentioning

confidence: 99%

“…The basic requirement is that the original as well as the reduced theory have to satisfy the corresponding renormalization group equations. The last years great progress has been made applying this method and looking for RGI relations [2,3,4,5,6,7,8,9] holding below the Planck scale up to GUT or lower scales.…”

Section: Introductionmentioning

confidence: 99%

Reduction of couplings in the MSSM

Tsamis¹

2015

Proceedings of Proceedings of the Corfu Summer Institute 2014 — PoS(CORFU2014)

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We present an application of the reduction of couplings program in the minimal supersymmetric Standard Model (MSSM). We investigate if a functional relation between α 1 and α 2 gauge couplings can be realized which is Renormalization Group Invariant (RGI). Following the same procedure for the top and bottom Yukawa couplings we end up with a prediction of a narrow window for tanβ , which is one of the basic parameters that determine the light Higgs mass.

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“…The one-and two-loop finiteness conditions (5) restrict considerably the possible choices of the irreducible representations R i for a given group G as well as the Yukawa couplings in the superpotential (1). Note in particular that the finiteness conditions cannot be applied to the supersymmetric standard model (SSM), since the presence of a U(1) gauge group is incompatible with the condition (5), due to C 2 [U(1)] = 0.…”

Section: Reduction Of Couplings and Finiteness In N = 1 Susy Gauge Thmentioning

confidence: 99%

“…The method to construct GUTs with reduced independent parameters [1,2] consists of searching for renormalization group invariant (RGI) relations holding below the Planck scale, which in turn are preserved down to the GUT scale. Of particular interest is the possibility to find RGI relations among couplings that guarantee finitenes to all-orders in perturbation theory [3,4].…”

Section: Introductionmentioning

confidence: 99%

Finite Unified Theories and the Higgs Mass Prediction

Djouadi

Heinemeyer

Mondragón

et al. 2005

Springer Proceedings in Physics

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Finite Unified Theories (FUTs) are N=1 supersymmetric Grand Unified Theories, which can be made all-loop finite, both in the dimensionless (gauge and Yukawa couplings) and dimensionful (soft supersymmetry breaking terms) sectors. This remarkable property provides a drastic reduction in the number of free parameters, which in turn leads to an accurate prediction of the top quark mass in the dimensionless sector, and predictions for the Higgs boson mass and the supersymmetric spectrum in the dimensionful sector. Here we examine the predictions of two FUTs taking into account a number of theoretical and experimental constraints. For the first one we present 1

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Reduction of couplings and heavy top quark in the minimal SUSY GUT

Cited by 89 publications

References 53 publications

Constraints on Finite Soft Supersymmetry Breaking Terms

Constraints on Finite Soft Supersymmetry Breaking Terms

Reduction of couplings in the MSSM

Finite Unified Theories and the Higgs Mass Prediction

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