skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Classically conformal U ( 1 ) ' extended standard model and Higgs vacuum stability

Abstract

Here, we consider the minimal U(1)' extension of the Standard Model (SM) with conformal invariance at the classical level, where in addition to the SM particle contents, three generations of right-handed neutrinos and a U(1)' Higgs field are introduced. In the presence of the three right-handed neutrinos, which are responsible for the seesaw mechanism, this model is free from all the gauge and gravitational anomalies. The U(1)' gauge symmetry is radiatively broken via the Coleman-Weinberg mechanism, by which the U(1)' gauge boson (Z' boson) mass as well as the Majorana mass for the right-handed neutrinos are generated. The radiative U(1)' symmetry breaking also induces a negative mass squared for the SM Higgs doublet to trigger the electroweak symmetry breaking. In this context, we investigate a possibility to solve the SM Higgs vacuum instability problem. The model includes only three free parameters (U(1)' charge of the SM Higgs doublet, U(1)' gauge coupling and Z' boson mass), for which we perform parameter scan, and identify a parameter region resolving the SM Higgs vacuum instability. We also examine naturalness of the model. The heavy states associated with the U(1)' symmetry breaking contribute to the SM Higgs self-energy. Furthermore, we find an upper boundmore » on Z' boson mass, mZ'≲6 TeV, in order to avoid a fine-tuning severer than 10 % level. The Z' boson in this mass range can be discovered at the LHC Run-2 in the near future.« less

Authors:
 [1];  [2];  [1]
  1. Okinawa Inst. of Science and Technology Graduate School (OIST) (Japan); Meio Univ., Okinawa (Japan). Research Inst.
  2. Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Univ. of Alabama, Tuscaloosa, AL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1365617
Alternate Identifier(s):
OSTI ID: 1202640
Grant/Contract Number:  
SC0013680
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 92; Journal Issue: 1; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Oda, Satsuki, Okada, Nobuchika, and Takahashi, Dai-suke. Classically conformal U(1)' extended standard model and Higgs vacuum stability. United States: N. p., 2015. Web. doi:10.1103/PhysRevD.92.015026.
Oda, Satsuki, Okada, Nobuchika, & Takahashi, Dai-suke. Classically conformal U(1)' extended standard model and Higgs vacuum stability. United States. https://doi.org/10.1103/PhysRevD.92.015026
Oda, Satsuki, Okada, Nobuchika, and Takahashi, Dai-suke. Mon . "Classically conformal U(1)' extended standard model and Higgs vacuum stability". United States. https://doi.org/10.1103/PhysRevD.92.015026. https://www.osti.gov/servlets/purl/1365617.
@article{osti_1365617,
title = {Classically conformal U(1)' extended standard model and Higgs vacuum stability},
author = {Oda, Satsuki and Okada, Nobuchika and Takahashi, Dai-suke},
abstractNote = {Here, we consider the minimal U(1)' extension of the Standard Model (SM) with conformal invariance at the classical level, where in addition to the SM particle contents, three generations of right-handed neutrinos and a U(1)' Higgs field are introduced. In the presence of the three right-handed neutrinos, which are responsible for the seesaw mechanism, this model is free from all the gauge and gravitational anomalies. The U(1)' gauge symmetry is radiatively broken via the Coleman-Weinberg mechanism, by which the U(1)' gauge boson (Z' boson) mass as well as the Majorana mass for the right-handed neutrinos are generated. The radiative U(1)' symmetry breaking also induces a negative mass squared for the SM Higgs doublet to trigger the electroweak symmetry breaking. In this context, we investigate a possibility to solve the SM Higgs vacuum instability problem. The model includes only three free parameters (U(1)' charge of the SM Higgs doublet, U(1)' gauge coupling and Z' boson mass), for which we perform parameter scan, and identify a parameter region resolving the SM Higgs vacuum instability. We also examine naturalness of the model. The heavy states associated with the U(1)' symmetry breaking contribute to the SM Higgs self-energy. Furthermore, we find an upper bound on Z' boson mass, mZ'≲6 TeV, in order to avoid a fine-tuning severer than 10 % level. The Z' boson in this mass range can be discovered at the LHC Run-2 in the near future.},
doi = {10.1103/PhysRevD.92.015026},
url = {https://www.osti.gov/biblio/1365617}, journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
issn = {1550-7998},
number = 1,
volume = 92,
place = {United States},
year = {2015},
month = {7}
}

Journal Article:

Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Radiative Corrections as the Origin of Spontaneous Symmetry Breaking
journal, March 1973


Heavy Fermions in the Standard Sequential Scheme
journal, April 1979


The next-to-minimal Coleman-Weinberg model
journal, June 1996


Novel effects in electroweak breaking from a hidden sector
journal, October 2007


Shadow Higgs boson from a scale-invariant hidden U ( 1 ) s model
journal, June 2007


Electroweak Higgs as a pseudo-Goldstone boson of broken scale invariance
journal, November 2007


Neutrino mass in radiatively broken scale-invariant models
journal, October 2007


Solution to the hierarchy problem from an almost decoupled hidden sector within a classically scale invariant theory
journal, February 2008


Conformal symmetry and the Standard Model
journal, May 2007


Effective action, conformal anomaly and the issue of quadratic divergences
journal, February 2008


Neutrinos, axions and conformal symmetry
journal, October 2008


Radiative symmetry breaking of the minimal left-right symmetric model
journal, September 2010


Physical naturalness and dynamical breaking of classical scale invariance
journal, May 2014


Natural electroweak symmetry breaking from scale invariant Higgs mechanism
journal, November 2013


Towards completing the standard model: Vacuum stability, electroweak symmetry breaking, and dark matter
journal, January 2014


Neutrino masses and conformal electro-weak symmetry breaking
journal, October 2014


Light dark matter, naturalness, and the radiative origin of the electroweak scale
journal, January 2015


Higgs vacuum stability from the dark matter portal
journal, August 2014


Classically conformal B – L extended Standard Model
journal, June 2009


Minimal B L model naturally realized at the TeV scale
journal, December 2009


μ→eγ at a rate of one out of 109 muon decays?
journal, April 1977


Neutrino Mass and Spontaneous Parity Nonconservation
journal, April 1980


Nonexotic neutral gauge bosons
journal, August 2003


Investigating the near-criticality of the Higgs boson
journal, December 2013


Z gauge bosons at the Fermilab Tevatron
journal, November 2004


Search for high-mass dilepton resonances in p p collisions at s = 8 TeV with the ATLAS detector
journal, September 2014


Search for physics beyond the standard model in dilepton mass spectra in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
journal, April 2015


Higgs mass implications on the stability of the electroweak vacuum
journal, March 2012


Vacuum stability in U ( 1 ) -prime extensions of the Standard Model with TeV scale right handed neutrinos
journal, November 2014


Stabilizing the Higgs potential with a Z′
journal, May 2015


Probing the Z ′ sector of the minimal BL model at future Linear Colliders in the e + e → μ + μ process
journal, October 2009


Implications for New Physics from Fine-Tuning Arguments: I. Application to SUSY and Seesaw Cases
journal, November 2004


    Works referencing / citing this record:

    Natural Z -portal Majorana dark matter in alternative U(1) extended standard model
    journal, August 2019


    Asymptotic safety in the conformal hidden sector?
    journal, July 2018


    Conformal invariance and singlet fermionic dark matter
    journal, October 2019


    Dirac neutrino mass generation from a Majorana messenger
    journal, February 2020


    Dark matter and neutrino masses from a scale-invariant multi-Higgs portal
    journal, October 2015


    Classically conformal U ( 1 ) extended standard model, electroweak vacuum stability, and LHC Run-2 bounds
    journal, June 2016


    Dark matter from a classically scale-invariant S U ( 3 ) X
    journal, September 2016


    Right-handed neutrino dark matter in the classically conformal U ( 1 ) extended standard model
    journal, November 2017


    Electroweak vacuum stability in classically conformal $$B-L$$ B - L extension of the standard model
    journal, February 2017


    Phase transition and vacuum stability in the classically conformal B–L model
    journal, July 2019