Classically conformal U(1)' extended standard model, electroweak vacuum stability, and LHC Run-2 bounds

Abstract

We consider the minimal U(1)' extension of the standard model (SM) with the classically conformal invariance, where an anomaly-free U(1)' gauge symmetry is introduced along with three generations of right-handed neutrinos and a U(1)' Higgs field. Since the classically conformal symmetry forbids all dimensional parameters in the model, the U(1)' gauge symmetry is broken by the Coleman-Weinberg mechanism, generating the mass terms of the U(1)' gauge boson ($Z$' boson) and the right-handed neutrinos. Through a mixing quartic coupling between the U(1)' Higgs field and the SM Higgs doublet field, the radiative U(1)' gauge symmetry breaking also triggers the breaking of the electroweak symmetry. In this model context, we first investigate the electroweak vacuum instability problem in the SM. Employing the renormalization group equations at the two-loop level and the central values for the world average masses of the top quark ($m_t=173.34$ GeV) and the Higgs boson ($m_h=125.09$ GeV), we perform parameter scans to identify the parameter region for resolving the electroweak vacuum instability problem. Next we interpret the recent ATLAS and CMS search limits at the LHC Run-2 for the sequential $Z$' boson to constrain the parameter region in our model. Combining the constraints from the electroweak vacuum stability and the LHC Run-2 results, we find a bound on the $Z$' boson mass as $m_{Z^{\prime }}\gtrsim 3.5$ TeV. We also calculate self-energy corrections to the SM Higgs doublet field through the heavy states, the right-handed neutrinos and the $Z$' boson, and find the naturalness bound as $m_{Z^{\prime }}\lesssim 7$ TeV, in order to reproduce the right electroweak scale for the fine-tuning level better than 10\%. The resultant mass range of $3.5$ TeV $\lesssim m_{Z^{\prime }}\lesssim 7$ TeV will be explored at the LHC Run-2 in the near future.

35 pages, 10 figures. The version published in Physical Review D. arXiv admin note: substantial text overlap with arXiv:1504.06291

References in corpus (45)

• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS Experiments
• Investigating the near-criticality of the Higgs boson
• SARAH 4: A tool for (not only SUSY) model builders
• Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP
• Higgs mass implications on the stability of the electroweak vacuum
• Z-prime Gauge Bosons at the Tevatron
• SARAH 3.2: Dirac Gauginos, UFO output, and more
• Search for high-mass dilepton resonances in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector
• Conformal Symmetry and the Standard Model
• Classically Conformal B-L extended Standard Model
• Nonexotic Neutral Gauge Bosons
• A solution to the hierarchy problem from an almost decoupled hidden sector within a classically scale invariant theory
• The minimal B-L model naturally realized at TeV scale
• Novel Effects in Electroweak Breaking from a Hidden Sector
• The Next-to-Minimal Coleman-Weinberg Model
• Search for physics beyond the standard model in dilepton mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• Electroweak Higgs as a pseudo-Goldstone boson of broken scale invariance
• Physical Naturalness and Dynamical Breaking of Classical Scale Invariance
• Natural Electroweak Symmetry Breaking from Scale Invariant Higgs Mechanism
• Towards Completing the Standard Model: Vacuum Stability, EWSB and Dark Matter
• Shadow Higgs from a scale-invariant hidden $U(1{)}_s$ model
• Dark matter and neutrino masses from a scale-invariant multi-Higgs portal
• Effective Action, Conformal Anomaly and the Issue of Quadratic Divergences
• Neutrino mass in radiatively-broken scale-invariant models
• $Z_{BL}^{\prime }$ portal dark matter and LHC Run-2 results
• Higgs vacuum stability from the dark matter portal
• Classically conformal U(1)${}^{\prime }$ extended Standard Model and Higgs vacuum stability
• Radiative Symmetry Breaking of the Minimal Left-Right Symmetric Model
• Implications for New Physics from Fine-Tuning Arguments: I. Application to SUSY and Seesaw Cases
• Light Dark Matter, Naturalness, and the Radiative Origin of the Electroweak Scale
• Neutrino Masses and Conformal Electro-Weak Symmetry Breaking
• Vacuum Stability in U(1)-Prime Extensions of the Standard Model with TeV Scale Right Handed Neutrinos
• Constraints on Abelian Extensions of the Standard Model from Two-Loop Vacuum Stability and $U(1{)}_{B-L}$
• Neutrinos, Axions and Conformal Symmetry
• Higgs Partner Searches and Dark Matter Phenomenology in a Classically Scale Invariant Higgs Boson Sector
• A new dynamics of electroweak symmetry breaking with classically scale invariance
• Stabilizing the Higgs potential with a Z${}^{\prime }$
• Bosonic seesaw mechanism in a classically conformal extension of the Standard Model
• Scalar Dark Matter in Scale Invariant Standard Model
• Electroweak Symmetry Breaking without the ${\mu }^2$ Term
• Gauge coupling unification in a classically scale invariant model
• Electroweak vacuum stability in classically conformal B-L extension of the Standard Model
• Higgs Triplet Model with Classically Conformal Invariance
• Electroweak symmetry breaking through bosonic seesaw mechanism in a classically conformal extension of the Standard Model

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