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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

After the observation in 2012 of a new scalar particle closely resembling the Higgs boson of the Standard Model of particle physics, there is a general consensus that there must be Physics Beyond the Standard Model, with present experiments…

High Energy Physics - Phenomenology · Physics 2025-09-24 Rafael Boto

We study neutral and charged Higgs boson production in association with stop and sbottom squarks at the Large Hadron Collider (LHC), within the so-called M-SUGRA scenario, i.e., the Supergravity (SUGRA) inspired Minimal Supersymmetric…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Dedes , S. Moretti

We investigate the prospects for the discovery of neutral Higgs bosons with a pair of muons by direct searches at the CERN Large Hadron Collider (LHC) as well as by indirect searches in the rare decay $B_s \to \mu^+\mu^-$ at the Fermilab…

High Energy Physics - Phenomenology · Physics 2008-11-26 Chung Kao , Yili Wang

The Higgs boson mass and the abundance of dark matter constrain the CMSSM/mSUGRA supersymmetry breaking inputs. A complete map of the CMSSM that is consistent with these two measured quantities is provided. Various "continents," consisting…

High Energy Physics - Phenomenology · Physics 2015-06-15 Timothy Cohen , Jay G. Wacker

The first results on the searches of the Higgs boson appeared this Summer from the LHC and Tevatron groups, and has been recently backed up by the ATLAS and CMS experiments taking data at CERN's LHC. Even though the excitement that this…

High Energy Physics - Phenomenology · Physics 2012-01-05 Marek Góźdź

We point out that present experimental limits from searches for neutral Higgs bosons at LEP already imply stringent lower bounds on the mass of the charged Higgs boson in the Minimal Supersymmetric Standard Model (MSSM); these bounds are…

High Energy Physics - Phenomenology · Physics 2009-11-19 Manuel Drees , E. Ma , P. N. Pandita , D. P. Roy , S. K. Vempati

We scan the complete parameter space of the supersymmetric standard model extended by a gauge singlet, which is compatible with the following constraints: universal soft supersymmetry breaking terms at the GUT scale, finite running Yukawa…

High Energy Physics - Phenomenology · Physics 2011-01-13 Ulrich Ellwanger , Michel Rausch de Traubenberg , Carlos A. Savoy

We discuss the lower bound to the lightest Higgs boson H_1 in the minimal supersymmetric extension of the standard model (MSSM) with explicit CP violation, and the phenomenology of the lightest relic neutralino in the same scenario. In…

High Energy Physics - Phenomenology · Physics 2008-11-26 Jae Sik Lee , Stefano Scopel

A comparison is made between accelerator and direct detection constraints in constrained versions of the minimal supersymmetric standard model. Models considered are based on mSUGRA, where scalar and gaugino masses are unified at the GUT…

High Energy Physics - Phenomenology · Physics 2009-09-15 Keith A. Olive

In the generalized minimal supergravity (GmSUGRA) scenario, we systematically study the supersymmetry breaking scalar masses, Standard Model fermion Yukawa coupling terms, and trilinear soft terms in SU(5) models with the Higgs fields in…

High Energy Physics - Phenomenology · Physics 2014-11-21 Csaba Balazs , Tianjun Li , Dimitri V. Nanopoulos , Fei Wang

We analyse the rare decay mode B_s -> mu^+ mu^- in the minimal supergravity scenario (mSUGRA). We find a strong correlation with the muon anomalous magnetic moment (g-2)_mu. An interpretation of the recently measured excess in (g-2)_mu in…

High Energy Physics - Phenomenology · Physics 2011-03-23 A. Dedes , H. K. Dreiner , U. Nierste

We explore supersymmetry (SUSY) parameter space with non-universal high scale parameters in gravity mediated SUSY breaking (SUGRA) scenario that accommodates a Higgs mass of (125$\pm$2) GeV while satisfying cold dark matter relic density…

High Energy Physics - Phenomenology · Physics 2014-01-22 Subhaditya Bhattacharya , Shreyashi Chakdar , Kirtiman Ghosh , S. Nandi

We explore a missing-partner model based on the minimal SU(5) gauge group with $\bf{75}$, $\bf{50}$ and $\bf{\overline{50}}$ Higgs representations, assuming a super-GUT CMSSM scenario in which soft supersymmetry-breaking parameters are…

High Energy Physics - Phenomenology · Physics 2021-07-14 John Ellis , Jason L. Evans , Natsumi Nagata , Keith A. Olive

After reviewing briefly the upper bounds on the mass of the lightest Higgs boson in the most general unconstrained minimal supersymmetric extension of the Standard Model, we discuss various arguments which reduce the parameter space of the…

High Energy Physics - Phenomenology · Physics 2016-11-03 P. H. Chankowski , Pokorski

We examine various direct and indirect experimental constraints on the nearly minimal supersymmetric standard model (nMSSM) and obtain the following observations: (i) Current experiments stringently constrain the parameter space, setting a…

High Energy Physics - Phenomenology · Physics 2009-05-29 Junjie Cao , Heather E. Logan , Jin Min Yang

In the context of No-Scale F-SU(5), a model defined by the convergence of the F-lipped SU(5) Grand Unified Theory, two pairs of hypothetical TeV scale vector-like supersymmetric multiplets with origins in F-theory, and the dynamically…

High Energy Physics - Phenomenology · Physics 2012-02-02 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We investigate the prospects for the discovery of neutral Higgs bosons with muons by direct searches at the CERN Large Hadron Collider (LHC) as well as by indirect searches in the rare decay Bs -> mu+ mu- at the Fermilab Tevatron and the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Chung Kao , Yili Wang

We present bounds on the Higgs mass in the Standard Model and in the Minimal Supersymmetric Standard Model using the effective potential with next-to-leading logarithms resummed by the renormalization group equations, and physical (pole)…

High Energy Physics - Phenomenology · Physics 2007-05-23 Mariano Quirós

We build an supersymmetric version of the minimal 3-3-1 model with just two Higgs triplets using the superfield formalism. We study the mass spectrum of all particles in concordance with the experimental bounds. At the tree level, the…

High Energy Physics - Phenomenology · Physics 2013-02-19 D. T. Huong , L. T. Hue , M. C. Rodriguez , H. N. Long