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A Higgs Mass Shift to 125 GeV and A Multi-Jet Supersymmetry Signal: Miracle of the Flippons at the \sqrt{s} = 7 TeV LHC

Tianjun Li, James A. Maxin, Dimitri V. Nanopoulos, Joel W. Walker

TL;DR

This work proposes No-Scale ${\cal F}$-$SU(5)$ with TeV-scale vector-like flippons to address two LHC signals: a Higgs mass near ${m_h \approx 125~\mathrm{GeV}}$ and low-statistics multi-jet SUSY excesses. The flippons contribute a ${\sim3$–$4~\mathrm{GeV}}$ uplift to ${m_h}$ via radiative loops and flatten the RG running of ${\alpha_3}$, producing a light gluino and a characteristic mass hierarchy ${m_{ ilde t_1} < m_{ ilde g} < m_{ ilde q}}$ that enhances high-multiplicity jet events. The paper provides a detailed Higgs-mass perturbation calculation, identifying a benchmark with ${M_{1/2} \approx 518~\mathrm{GeV}}$ and ${M_V \approx 1640~\mathrm{GeV}}$ yielding ${m_h \approx 125.4~\mathrm{GeV}}$ and a gluino in the few-hundred GeV to ~1 TeV range, consistent with existing bounds and potential CMS/ATLAS excesses. The authors project that existing 5 fb$^{-1}$ of LHC data, with appropriate cuts, could decisively test this scenario, offering a unified explanation for both the Higgs and SUSY signals and making concrete, testable predictions for the LHC Run 2.

Abstract

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 may attributable to supersymmetry. These targets tend to be mutually exclusive in more conventional approaches. The unified mechanism responsible for both effects is the introduction of a rather unique set of vector-like multiplets at the TeV scale, dubbed flippons, which i) can elevate m_h by around 3-4 GeV via radiative loop corrections, and ii) flatten the running of the strong coupling and color-charged gaugino, resulting in a prominent collider signal from production of light gluino pairs. This well motivated theoretical framework maintains consistency with all key phenomenological constraints, and all residual parameterization freedom may in principle be fixed by a combination of the two experiments described. We project that the already collected luminosity of 5 fb^-1 may be sufficient to definitively establish the status of this model, given appropriate data selection cuts.

A Higgs Mass Shift to 125 GeV and A Multi-Jet Supersymmetry Signal: Miracle of the Flippons at the \sqrt{s} = 7 TeV LHC

TL;DR

This work proposes No-Scale - with TeV-scale vector-like flippons to address two LHC signals: a Higgs mass near and low-statistics multi-jet SUSY excesses. The flippons contribute a – uplift to via radiative loops and flatten the RG running of , producing a light gluino and a characteristic mass hierarchy that enhances high-multiplicity jet events. The paper provides a detailed Higgs-mass perturbation calculation, identifying a benchmark with and yielding and a gluino in the few-hundred GeV to ~1 TeV range, consistent with existing bounds and potential CMS/ATLAS excesses. The authors project that existing 5 fb of LHC data, with appropriate cuts, could decisively test this scenario, offering a unified explanation for both the Higgs and SUSY signals and making concrete, testable predictions for the LHC Run 2.

Abstract

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 may attributable to supersymmetry. These targets tend to be mutually exclusive in more conventional approaches. The unified mechanism responsible for both effects is the introduction of a rather unique set of vector-like multiplets at the TeV scale, dubbed flippons, which i) can elevate m_h by around 3-4 GeV via radiative loop corrections, and ii) flatten the running of the strong coupling and color-charged gaugino, resulting in a prominent collider signal from production of light gluino pairs. This well motivated theoretical framework maintains consistency with all key phenomenological constraints, and all residual parameterization freedom may in principle be fixed by a combination of the two experiments described. We project that the already collected luminosity of 5 fb^-1 may be sufficient to definitively establish the status of this model, given appropriate data selection cuts.

Paper Structure

This paper contains 8 sections, 9 equations, 3 figures, 2 tables.

Table of Contents

  1. Introduction
  2. The Two-Pronged LHC Mission
  3. The LHC Higgs Search Strategy
  4. The Miracle of the Flippons
  5. The No-Scale $\mathbf{\cal{F}}$-$\mathbf{SU(5)}$ Model
  6. The Higgs Mass Perturbation
  7. Next Stop-Gluino Masses
  8. Conclusions

Figures (3)

  • Figure 1: The space of bare-minimal constraints Li:2011xu on the No-Scale $\cal{F}$-$SU(5)$ model is presented in the ($M_{1/2}$,$M_{\rm V}$) plane, with contour overlays designating the $\tan \beta$ and $m_{\rm t}$ parameter ranges, in addition to the corrected Higgs mass $m_h$, inclusive of the shift from vector-like multiplet interactions.
  • Figure 2: An ATLAS collaboration plot Aad:2011qa (present in the arXiv source repository supplementing the cited document) representing $1.34~{\rm fb}^{-1}$ of integrated luminosity at $\sqrt{s} = 7$ TeV is reprinted with an overlay summing our Monte Carlo collider-detector simulation of the No-Scale $\cal{F}$-$SU(5)$ model benchmark ($M_{1/2}=518$ GeV, $M_{\rm V}=1640$ GeV) with the ATLAS SM background.
  • Figure 3: A CMS collaboration plot PAS-SUS-11-003 representing $1.1~{\rm fb}^{-1}$ of integrated luminosity at $\sqrt{s} = 7$ TeV is reprinted with an overlay summing our Monte Carlo collider-detector simulation of the No-Scale $\cal{F}$-$SU(5)$ model benchmark ($M_{1/2}=518$ GeV, $M_{\rm V}=1640$ GeV) with the CMS SM background.