A stronger case for superunification post Higgs boson discovery

Nath, Pran; Syed, Raza M.

doi:10.1088/1402-4896/aa9512

Cited by 3 publications

(2 citation statements)

References 246 publications

(283 reference statements)

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“…In view of the above, the non-observation of supersymmetry thus far is not surprising. In fact, as argued recently, the case for supersymmetry is stronger after the Higgs boson discovery [15] and we discuss briefly the underlying reasons for the pursuit of supersymmetry. Thus one of the attractive features of supersymmetry is the resolution of the large hierarchy problem related to the quadratic divergence of the loop correction to the Higgs boson mass by quark loops and its cancellation by squark loops.…”

Section: Introductionmentioning

confidence: 70%

Supersymmetry at a 28 TeV hadron collider: HE-LHC

Aboubrahim

Nath

2018

Phys. Rev. D

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The discovery of the Higgs boson at ∼125 GeV indicates that the scale of weak scale supersymmetry is higher than what was perceived in the pre-Higgs boson discovery era and lies in the several TeV region. This makes the discovery of supersymmetry more challenging and argues for hadron colliders beyond LHC at ffiffi ffi s p ¼ 14 TeV. The Future Circular Collider (FCC) study at CERN is considering a 100 TeV collider to be installed in a 100 km tunnel in the Lake Geneva basin. Another 100 km collider being considered in China is the Super proton-proton Collider. A third possibility recently proposed is the high-energy LHC (HE-LHC) which would use the existing CERN tunnel but achieve a center-of-mass energy of 28 TeV by using FCC magnet technology at significantly higher luminosity than at the high luminosity LHC (HL-LHC). In this work we investigate the potential of HE-LHC for the discovery of supersymmetry. We study a class of supergravity unified models under the Higgs boson mass and the dark matter relic density constraints and compare the analysis with the potential reach of the HL-LHC. A set of benchmarks is presented which are beyond the discovery potential of HL-LHC but are discoverable at HE-LHC. For comparison, we study model points at HE-LHC which are also discoverable at HL-LHC. For these model points, it is found that their discovery would require a HL-LHC run between 5-8 years while the same parameter points can be discovered in a period of a few weeks to ∼1.5 yr at HE-LHC running at its optimal luminosity of 2.5 × 10 35 cm −2 s −1 . The analysis indicates that the HE-LHC possibility should be seriously pursued as it would significantly increase the discovery reach for supersymmetry beyond that of HL-LHC and decrease the run period for discovery.

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Section: Introductionmentioning

confidence: 70%

Supersymmetry at a 28 TeV hadron collider: HE-LHC

Aboubrahim

Nath

2018

Phys. Rev. D

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“…Remarkably in SUGRA models the Higgs boson mass is predicted so that M H ≤ 130 GeV [12]. In fact, the measurement of the Higgs boson at 125 GeV gives further support for supersymmetry [13]. This is in part because of vacuum stability.…”

Section: The Energy Frontiermentioning

confidence: 95%

High energy physics and cosmology at the unification frontier: Opportunities and challenges in the coming years

Nath

2018

Int. J. Mod. Phys. A

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We give here an overview of recent developments in high energy physics and cosmology and their interconnections that relate to unification, and discuss prospects for the future. Thus there are currently three empirical data that point to supersymmetry as an underlying symmetry of particle physics: the unification of gauge couplings within supersymmetry, the fact that nature respects the supersymmetry prediction that the Higgs boson mass lie below 130 GeV, and vacuum stability up to the Planck scale with a Higgs boson mass at * Email: p.nath@notheastern.edu arXiv:1807.05302v1 [hep-ph] 13 Jul 2018 2 model of inflation. These results will be a guide to further model building that incorporates unification of particle physics and cosmology.

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Leptonic CP violation and proton decay in SUSY SO(10)

Mohapatra

Severson

2018

J. High Energ. Phys.

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We study the correlation between proton lifetime and leptonic CP violation in a class of renormalizable supersymmetric SO(10) grand unified theories (GUTs) with 10, 126 and 120 Higgs fields, which provides a unified description of all fermion masses and possibly resolution of the strong CP problem. This specific model is unique in that it can readily be compatible with current proton lifetime limits for a supersymmetry (SUSY) breaking scale as low as 5 TeV due to the presence of a specific Yukawa texture. Our investigation here reveals that proton partial lifetimes predicted by this class of models will be tested by forthcoming proton decay searches; furthermore, a discovery of leptonic CP violation in neutrino oscillations would also lead to substantial reduction of the parameter space of the model.

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A stronger case for superunification post Higgs boson discovery

Cited by 3 publications

References 246 publications

Supersymmetry at a 28 TeV hadron collider: HE-LHC

Supersymmetry at a 28 TeV hadron collider: HE-LHC

High energy physics and cosmology at the unification frontier: Opportunities and challenges in the coming years

Leptonic CP violation and proton decay in SUSY SO(10)

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