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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 2007-05-23 Mario E. Gomez

The cosmological relic density of a Bino-like Lightest Supersymmetric Particle is calculated in the framework of the Minimal Supersymmetric Standard Model. We include annihilation and coannihilation effects of the Bino with the lightest…

High Energy Physics - Phenomenology · Physics 2007-05-23 Constantinos 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

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 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

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

We analyze the constrained minimal supersymmetric standard model with mu>0 supplemented by a generalized `asymptotic' Yukawa coupling quasi-unification condition, which allows an acceptable b-quark mass. We impose constraints from the cold…

High Energy Physics - Phenomenology · Physics 2013-05-14 N. Karagiannakis , G. Lazarides , C. Pallis

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

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 compute the cosmic relic (dark matter) density of the lightest supersymmetric particle (LSP) in the framework of minimal $N=1$ Supergravity models with radiative breaking of the electroweak gauge symmetry. To this end, we re--calculate…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Drees , M. M. Nojiri

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 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

Simple supersymmetric grand unified models based on the gauge group SO(10) require --in addition to gauge and matter unification-- the unification of t-b-\tau Yukawa couplings. Yukawa unification, however, only occurs for very special…

High Energy Physics - Phenomenology · Physics 2008-11-26 Howard Baer , Sabine Kraml , Sezen Sekmen , Heaya Summy

We consider a left-right symmetric SU(4)_c \times SU(2)_L \times SU(2)_R (4-2-2) model with gravity mediated supersymmetry breaking. We find that with 4-2-2 compatible non-universal gaugino masses, t-b-\tau Yukawa coupling unification is…

High Energy Physics - Phenomenology · Physics 2009-06-30 Ilia Gogoladze , Rizwan Khalid , Qaisar Shafi

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

Naturalness in supersymmetry (SUSY) is under siege by increasingly stringent LHC constraints, but natural electroweak symmetry breaking still remains the most powerful motivation for superpartner masses within experimental reach. If…

High Energy Physics - Phenomenology · Physics 2015-06-05 Gilly Elor , Lawrence J. Hall , David Pinner , Joshua T. Ruderman

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

We propose a way to generate tiny couplings of freeze-in massive particle dark matter with the Standard Model particles dynamically by considering an extension of the electroweak gauge symmetry. The dark matter is considered to be a singlet…

High Energy Physics - Phenomenology · Physics 2019-02-06 Anirban Biswas , Debasish Borah , Arnab Dasgupta

We investigate supersymmetric SO(10) GUT model with \mu<0. The requirements of top-bottom-tau Yukawa unification, correct radiative electroweak symmetry breaking and agreement with the present experimental data may be met when the soft…

High Energy Physics - Phenomenology · Physics 2011-09-05 Marcin Badziak , Marek Olechowski , Stefan Pokorski
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