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We review the No-Scale F-SU(5) model with extra TeV-scale vector-like flippon multiplets and associated collider phenomenology relating to the search for supersymmetry at the LHC. The model framework possesses the rather unique capacity to…

High Energy Physics - Phenomenology · Physics 2013-12-18 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We describe a model named No-Scale F-SU(5) which is simultaneously capable of explaining the dual signals emerging at the LHC of i) a 124-126 GeV Higgs boson mass m_h, and ii) tantalizing low-statistics excesses in the multi-jet data which…

High Energy Physics - Phenomenology · Physics 2012-03-20 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We celebrate the recent Higgs discovery announcement with our experimental colleagues at the LHC and look forward to the implications that this success will bring to bear upon the continuing search for supersymmetry (SUSY). The model…

High Energy Physics - Phenomenology · Physics 2012-10-31 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We examine the first ATLAS Collaboration 8 TeV 5.8/fb supersymmetry (SUSY) multijet data observations in the context of No-Scale Flipped SU(5) with extra TeV-Scale vector-like flippon multiplets, dubbed F-SU(5), finding that the recent 8…

High Energy Physics - Phenomenology · Physics 2012-10-11 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

The Supergravity model named No-Scale ${\cal F}$-$SU(5)$, which is based upon the flipped $SU$(5) Grand Unified Theory (GUT) with additional TeV-scale vector-like flippon multiplets, has been partially probed during the LHC Run 1 at 7-8…

High Energy Physics - Phenomenology · Physics 2015-08-05 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We study the grand unification model flipped $SU(5)$ with additional vector-like particle multiplets, or ${\cal F}$-$SU(5)$ for short, in the framework of General No-Scale Supergravity. In our analysis we allow the supersymmetry (SUSY)…

High Energy Physics - Phenomenology · Physics 2017-06-07 Dingli Hu , Tianjun Li , Adam Lux , James A. Maxin , Dimitri V. Nanopoulos

Motivated by D-brane model building, we evaluate the $\cal{F}$-$SU(5)$ model with additional vector-like particle multiplets, referred to as flippons, within the framework of No-Scale Supergravity with non-vanishing general supersymmetry…

High Energy Physics - Phenomenology · Physics 2018-11-27 Ron De Benedetti , Chuang Li , Tianjun Li , Adam Lux , James A. Maxin , Dimitri V. Nanopoulos

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 present the reach of the Large Hadron Collider (LHC) into the parameter space of No-Scale F-SU(5), starting our analysis with the current operating energy of \sqrt{s} = 7 TeV, and extending it on through the bright future of a 14 TeV…

High Energy Physics - Phenomenology · Physics 2012-02-16 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We revisit the construction of the viable parameter space of No-Scale F-SU(5), a model built on the F-lipped SU(5)xU(1)_X gauge group, supplemented by a pair of F-theory derived vector-like multiplets at the TeV scale, and the dynamically…

High Energy Physics - Phenomenology · Physics 2012-06-05 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We establish that the light Higgs boson mass in the context of the No-Scale Flipped SU(5) GUT with TeV scale vector-like matter multiplets (flippons) is consistent with m_h = 125.5+-0.5 GeV in the region of the best supersymmetry (SUSY)…

High Energy Physics - Phenomenology · Physics 2012-12-11 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We present the distinctive collider signatures of No-Scale F-SU(5), a highly efficient and phenomenologically favored model built on the tripodal foundations of the F-lipped SU(5) X U(1)_X Grand Unified Theory, extra F-theory derived TeV…

High Energy Physics - Phenomenology · Physics 2015-03-19 James A. Maxin , Tianjun Li , Dimitri V. Nanopoulos , Joel W. Walker

On the heels of the first analysis of LHC data eclipsing the inverse femtobarn integrated luminosity milestone, we undertake a detailed comparison of the most recent experimental results with Monte Carlo simulation of the full…

High Energy Physics - Phenomenology · Physics 2011-08-26 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We examine the ATLAS and CMS 7 & 8 TeV multijet supersymmetry (SUSY) searches requiring the incidence of a single lepton in the framework of the supersymmetric grand unified model No-Scale Flipped SU(5) with extra vector-like flippon…

High Energy Physics - Phenomenology · Physics 2013-09-18 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

The absence of low energy supersymmetry in run I data at the LHC has pushed the nominal scale for supersymmetry beyond a TeV. While this is consistent with the discovery of the Higgs boson at \approx 125 GeV, simple models with scalar and…

High Energy Physics - Phenomenology · Physics 2015-10-23 Keith A. Olive

In our recent paper entitled "The return of the King: No-Scale ${\cal F}$-$SU(5)$", we showed that the model space supporting the most favorable phenomenology should have been probed in 2016 at the LHC2, with an even further reach into this…

High Energy Physics - Phenomenology · Physics 2017-08-28 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos

The discovery of the Higgs boson at the Large Hadron Collider (LHC) has a great impact on the minimal supersymmetric extension of the Standard Model (MSSM). In the context of the constrained MSSM (CMSSM) and its extension with non-universal…

High Energy Physics - Phenomenology · Physics 2014-07-23 Nobuchika Okada , Shabbar Raza , Qaisar Shafi

We present a contemporary perspective on the String Landscape and the Multiverse of plausible string, M- and F-theory vacua. In contrast to traditional statistical classifications and capitulation to the anthropic principle, we seek only to…

High Energy Physics - Phenomenology · Physics 2015-03-17 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We study the 2010 specific version of the 2002 proposed $U(1)_X$ extension of the supersymmetric standard model, which has no $\mu$ term and conserves baryon number and lepton number separately and automatically. We consider in detail the…

High Energy Physics - Phenomenology · Physics 2016-06-29 Sean Fraser , Corey Kownacki , Ernest Ma , Nicholas Pollard , Oleg Popov , Mohammadreza Zakeri

We investigate the implications of models that achieve a Standard Model-like Higgs boson of mass near 125 GeV by introducing additional TeV-scale supermultiplets in the vector-like 10+\bar{10} representation of SU(5), within the context of…

High Energy Physics - Phenomenology · Physics 2013-05-30 Stephen P. Martin , James D. Wells
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