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Related papers: No-Scale Supergravity in the Light of LHC and Plan…

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

High Energy Physics - Phenomenology · Physics 2014-08-26 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 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 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

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 describe a methodology for testing No-Scale Supergravity by the LAT instrument onboard the Fermi Space Telescope via observation of gamma ray emissions from lightest supersymmetric (SUSY) neutralino annihilations. For our test vehicle we…

High Energy Physics - Phenomenology · Physics 2014-03-11 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We take stock of the No-Scale F-SU(5) model's experimental status and prospects in the light of results from LHC, Planck, and XENON100. Given that no conclusive evidence for light Supersymmetry (SUSY) has emerged from the 7, 8 TeV collider…

High Energy Physics - Phenomenology · Physics 2013-10-15 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

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

We propose a minimal model framework for physics below the Planck scale with the following features: (i) it is based on no-scale supergravity, as favoured in many string compactifications, (ii) it incorporates Starobinsky-like inflation,…

High Energy Physics - Phenomenology · Physics 2014-02-12 John Ellis , Dimitri V. Nanopoulos , Keith A. Olive

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

In light of recent 80-137 $\rm{fb}^{-1}$ results at the LHC Run 2 establishing a lower gluino mass limit of 2.25 TeV, we revisit the supersymmetric GUT model Flipped $SU$(5) with extra vector-like particles, known as $\cal{F}$-$SU$(5), with…

High Energy Physics - Phenomenology · Physics 2019-10-25 Thomas Ford , Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos

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

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

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

We analyse the shifted hybrid inflation in a no-scale SU(5) model with supersymmetry, which naturally circumvents the monopole problem. The no-scale framework is derivable as the effective field theory of the supersymmetric (SUSY)…

High Energy Physics - Phenomenology · Physics 2023-05-12 Waqas Ahmed , Muhammad Moosa , Shoaib Munir , Umer Zubair

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 present a contemporary perspective on the String Landscape and the Multiverse of plausible string, M- and F-theory vacua, seeking to demonstrate a non-zero probability for the existence of a universe matching our own observed physics…

High Energy Physics - Phenomenology · Physics 2011-07-13 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We complete an investigation of the observable signatures of No-Scale flipped SU(5) x U(1)_X grand unified theory with TeV-scale vector-like particles (No-Scale F-SU(5)) at the LHC and dark matter direct detection experiments. We feature a…

High Energy Physics - Phenomenology · Physics 2012-09-06 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

We describe a region of the No-Scale F-SU(5) supersymmetric model with TeV-scale vector-like matter multiplets that is potentially opaque to LHC observations based upon top quark reconstruction. Possessing a 100% on-shell branching fraction…

High Energy Physics - Phenomenology · Physics 2013-12-02 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker
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