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We present an updated analysis of the constrained minimal supersymmetric standard model with mu>0 supplemented by an `asymptotic' Yukawa coupling quasi-unification condition, which allows an acceptable b-quark mass. Imposing constraints…

High Energy Physics - Phenomenology · Physics 2015-06-03 N. Karagiannakis , G. Lazarides , C. Pallis

The constrained minimal supersymmetric standard model with mu>0 supplemented by an `asymptotic' Yukawa coupling quasi-unification condition, which allows an acceptable b-quark mass, is reinvestigated. Imposing updated constraints from the…

High Energy Physics - Phenomenology · Physics 2015-03-19 N. Karagiannakis , G. Lazarides , C. Pallis

The construction of specific supersymmetric grand unified models based on the Pati-Salam gauge group and leading to a set of Yukawa quasi-unification conditions which can allow an acceptable b-quark mass within the constrained minimal…

High Energy Physics - Phenomenology · Physics 2014-01-31 N. Karagiannakis , G. Lazarides , C. Pallis

We analyze the parametric space of the constrained minimal supersymmetric standard model with mu>0 supplemented by a generalized asymptotic Yukawa coupling quasi-unification condition which yields acceptable masses for the fermions of the…

High Energy Physics - Phenomenology · Physics 2015-10-28 N. Karagiannakis , G. Lazarides , C. Pallis

We construct concrete supersymmetric grand unified theories based on the Pati-Salam gauge group SU(4)_c x SU(2)_L x SU(2)_R which naturally lead to a moderate violation of "asymptotic" Yukawa unification and thus can allow an acceptable…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. E. Gomez , G. Lazarides , C. Pallis

We consider the constrained minimal supersymmetric standard model which emerges from one theory with a small deviation from Yukawa unification which is adequate for $\mu>0$. We show that this model possesses a wide and natural range of…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. E. Gomez , C. Pallis

We analyze the parametric space of the constrained minimal supersymmetric standard model (CMSSM) with mu>0 supplemented by a generalized asymptotic Yukawa coupling quasi-unification condition which yields acceptable masses for the fermions…

High Energy Physics - Phenomenology · Physics 2015-09-02 N. Karagiannakis , G. Lazarides , C. Pallis

We explore the dark matter and LHC implications of t-b-tau quasi Yukawa unification in the framework of supersymmetric models based on the gauge symmetry G=SU(4)_{c}\times SU(2)_{L}\times SU(2)_{R}. The deviation from exact Yukawa…

High Energy Physics - Phenomenology · Physics 2015-12-09 Qaisar Shafi , Sukru Hanif Tanyildizi , Cem Salih Un

We show that b-tau Yukawa unification can be successfully implemented in the constrained minimal supersymmetric model and it yields the stop co-annihilation scenario.The lightest supersymmetric particle is a bino-like dark matter…

High Energy Physics - Phenomenology · Physics 2015-05-27 Ilia Gogoladze , Shabbar Raza , Qaisar Shafi

The minimal supersymmetric standard model with universal boundary conditions and "asymptotic" Yukawa unification is considered. The full one-loop effective potential for radiative electroweak symmetry breaking as well as the one-loop…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. E. Gomez , G. Lazarides , C. Pallis

An analysis of supersymmetric dark matter under the Yukawa unification constraint is given. The analysis utilizes the recently discovered region of the parameter space of models with gaugino mass nonuniversalities where large negative…

High Energy Physics - Phenomenology · Physics 2011-05-05 Utpal Chattopadhyay , Achille Corsetti , Pran Nath

Supersymmetric models with t-b-tau Yukawa coupling unification and unified gaugino masses at the GUT scale with mu >0 show a mild preference for light gluino masses \lesssim 500 GeV. This range of gluino mass is now essentially ruled out by…

High Energy Physics - Phenomenology · Physics 2015-06-03 Howard Baer , Shabbar Raza , Qaisar Shafi

The minimal supersymmetric standard model with complete, partial or no Yukawa unification and radiative electroweak breaking with boundary conditions from the Horava-Witten theory is considered. The parameters are restricted by constraining…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Khalil , G. Lazarides , C. Pallis

The cosmological relic density of the lightest supersymmetric particle of the minimal supersymmetric standard model is calculated under the assumption of gauge and Yukawa coupling unification. We employ radiative electroweak breaking with…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. E. Gomez , G. Lazarides , C. Pallis

Phenomenology of neutralino dark matter in the minimal supersymmetric model is discussed for a scenario where the lightest Higgs boson mass is lighter than 114.4 GeV. We show that the scenario is consistent not only with many collider…

High Energy Physics - Phenomenology · Physics 2008-11-26 Masaki Asano , Shigeki Matsumoto , Masato Senami , Hiroaki Sugiyama

Although recent data on the muon anomalous magnetic moment strongly disfavor the constrained minimal supersymmetric standard model with mu<0, they cannot exclude it because of theoretical ambiguities. We consider this model supplemented by…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. E. Gomez , G. Lazarides , C. Pallis

We review the construction of a concrete supersymmetric grand unified model, which naturally leads to a moderate violation of "asymptotic" Yukawa unification and, thus, can allow an acceptable b-quark mass within the constrained minimal…

High Energy Physics - Phenomenology · Physics 2017-08-23 G. Lazarides , C. Pallis

The construction of a Supersymmetric Grand Unified Model based on the Pati-Salam gauge group is briefly reviewed and the low energy consequences of the derived asymptotic Yukawa quasi-unification conditions are examined. In the framework of…

High Energy Physics - Phenomenology · Physics 2007-05-23 C. Pallis , M. E. Gomez

The lightest supersymmetric particles could be higgsinos that have a small mixing with gauginos. If the lightest higgsino-like state makes up some or all of the dark matter with a thermal freezeout density, then its mass must be between…

High Energy Physics - Phenomenology · Physics 2024-05-08 Stephen P. Martin

We employ the Yukawa coupling unification condition, y_t= y_b= y_tau at M_GUT, inspired by supersymmetric SO(10) models, to estimate the lightest Higgs boson mass as well as masses of the associated squarks and gluino. We employ…

High Energy Physics - Phenomenology · Physics 2015-06-03 Ilia Gogoladze , Qaisar Shafi , Cem Salih Un
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