scholarly journals Amelioration of the little hierarchy problem inSU(4)c×SU(2)L×SU(2)R

2009 ◽  
Vol 80 (10) ◽  
Author(s):  
Ilia Gogoladze ◽  
Mansoor Ur Rehman ◽  
Qaisar Shafi
Keyword(s):  
Hierarchy Problem ◽  
Little Hierarchy Problem

scholarly journals NONUNIVERSAL GAUGINO MASSES AND NATURAL SUPERSYMMETRY

2013 ◽  
Vol 28 (13) ◽  
pp. 1350046 ◽  
Author(s):  
ILIA GOGOLADZE ◽  
FARIHA NASIR ◽  
QAISAR SHAFI
Keyword(s):  
Standard Model ◽  
Quark Mass ◽  
Higgs Mass ◽  
Mass Range ◽  
Fine Tuning ◽  
Hierarchy Problem ◽  
Light Stop ◽  
High Scale ◽  
Little Hierarchy Problem ◽  
Gaugino Masses

We demonstrate that natural supersymmetry is readily realized in the framework of SU(4)c×SU(2)L×SU(2)Rwith nonuniversal gaugino masses. Focusing on ameliorating the little hierarchy problem, we explore the parameter space of this model which yields small fine-tuning measuring parameters (natural supersymmetry) at the electroweak scale (ΔEW) as well as at high scale (ΔHS). It is possible to have both ΔEWand ΔHSless than 100 in these models, (2% or better fine-tuning), while keeping the light CP-even (Standard Model-like) Higgs mass in the 123–127 GeV range. The light stop quark mass lies in the range [Formula: see text], and the range for the light stau lepton mass is [Formula: see text]. The first two family squarks are in the mass range [Formula: see text], and for the gluino we find [Formula: see text]. We do not find any solution with natural supersymmetry which yields significant enhancement for Higgs production and decay in the diphoton channel.

scholarly journals Little Supersymmetry and the Supersymmetric Little Hierarchy Problem

2004 ◽  
Vol 2004 (10) ◽  
pp. 036-036 ◽  
Author(s):  
Andreas Birkedal ◽  
Z Chacko ◽  
Mary K Gaillard
Keyword(s):  
Hierarchy Problem ◽  
Little Hierarchy Problem

scholarly journals Solving the Little Hierarchy Problem with a Singlet and ExplicitμTerms

2010 ◽  
Vol 105 (9) ◽  
Author(s):  
Antonio Delgado ◽  
Christopher Kolda ◽  
J. Pocahontas Olson ◽  
Alejandro de la Puente
Keyword(s):  
Hierarchy Problem ◽  
Little Hierarchy Problem

scholarly journals Little solution to the little hierarchy problem: A vectorlike generation

2010 ◽  
Vol 81 (5) ◽  
Author(s):  
Peter W. Graham ◽  
Ahmed Ismail ◽  
Surjeet Rajendran ◽  
Prashant Saraswat
Keyword(s):  
Hierarchy Problem ◽  
Little Hierarchy Problem

scholarly journals Mirror neutrons as dark matter in the Mirror Twin Two Higgs Doublet Model

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Hugues Beauchesne
Keyword(s):  
Dark Matter ◽  
Higgs Doublet ◽  
Natural Setting ◽  
Hierarchy Problem ◽  
Doublet Model ◽  
Little Hierarchy Problem ◽  
Asymmetric Dark Matter ◽  
Two Higgs Doublet Model

Abstract In addition to being a solution to the little hierarchy problem, the Mirror Twin Higgs provides a natural setting for Asymmetric Dark Matter. In its incarnation with only one Higgs doublet and its mirror copy, dark matter would however almost certainly consist mostly of mirror atoms, which is severely ruled out by constraints on dark matter self-interactions. By adding a second Higgs doublet and its mirror, the vevs of the different Higgses can be arranged such that dark matter consists mostly of mirror neutrons, which is cosmologically viable. In this paper, it is shown that current constraints from colliders, flavour and cosmology can accommodate such a vev structure with little increase in the necessary tuning.

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