Abstract
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 established boundary conditions of No-Scale Supergravity, we predict that the lightest CP-even Higgs boson mass lies within the range of 119.0 GeV to 123.5 GeV, exclusive of the vector-like particle contribution to the mass. With reports by the CMS, ATLAS, CDF, and DØ Collaborations detailing enticing statistical excesses in the vicinity of 120 GeV in searches for the Standard Model Higgs boson, all signs point to an imminent discovery. While basic supersymmetric constructions such as mSUGRA and the CMSSM have already suffered overwhelming reductions in viable parameterization during the LHCʼs initial year of operation, about 80% of the original No-Scale F-SU(5) model space remains viable after analysis of the first 1.1 fb−1 of integrated luminosity. This model is moreover capable of handily explaining the small excesses recently reported in the CMS multijet supersymmetry search, and also features a highly favorable “golden” subspace which may simultaneously account for the key rare process limits on the muon anomalous magnetic moment (g−2)μ and the branching ratio of the flavor-changing neutral current decay b→sγ. In addition, the isolated mass parameter responsible for the global particle mass normalization, the gaugino boundary mass M1/2, is dynamically determined at a secondary local minimization of the minimum of the Higgs potential Vmin, in a manner which is deeply consistent with all precision measurements at the physical electroweak scale.
Highlights
The Large Hadron collider (LHC) has accumulated to date at a up to 2.3 fb−1 center-of-mass of data from beam energy porfo√tosn=-pr7otToenVc,oalllriseiaodnys establishing firm constraints on the mass of the lightestCP-even Higgs boson
All indications from the CMS, ATLAS, CDF, and DØ Collaborations suggest that a statistically significant observation of the Higgs boson in the vicinity of 120 GeV could be on the near-term horizon, possibly by the end of 2011
Applying only a set of bare-minimal experimental constraints, more than 80% of the resulting model space of the F -SU (5) remains viable after the first 1.1 fb−1 of luminosity at the LHC. We found that this entire surviving model space naturally generates a Higgs mass of 119.0123.5 GeV, in accord with the overall combined contributions of all individual Higgs decay channels observed by CMS above the expected Standard Model background
Summary
The Large Hadron collider (LHC) has accumulated to date at a up to 2.3 fb−1 center-of-mass of data from beam energy porfo√tosn=-pr7otToenVc,oalllriseiaodnys establishing firm constraints on the mass of the lightest. Supersymmetric Grand Unified Theories (GUTs) with gravity mediated supersymmetry breaking, known in their simplest variations as minimal Supergravity (mSUGRA) and the Constrained Minimal Supersymmetric Standard Model (CMSSM), have been exhaustively assessed against the first 1.1 fb−1 of integrated luminosity; an overwhelming majority of the formerly experimentally viable parameter space of these models has failed to survive this testing, and has fallen out of favor This fuels the question of whether there endure SUSY and/or superstring post-Standard Model extensions that can continue to successfully counter the rapidly advancing constraints while simultaneously providing a naturally derived Higgs boson mass near 120 GeV, and while remaining potentially visible to the early operation of the LHC. This rescaling symmetry can be broken to a slight degree by the vector-like mass parameter, the dependence is rather weak
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