S U ( 5 ) × U ( 1 ) X axion model with observable proton decay

Okada, Nobuchika; Raut, Digesh; Shafi, Qaisar

doi:10.1103/PhysRevD.104.055041

Title: $S U (5) \times U (1)_{X}$ axion model with observable proton decay

Abstract

We propose a SU(5) × U(1)_X × U(1)_PQ model, where U(1)_X is the generalization of the B – L (baryon minus lepton number) gauge symmetry and U(1)_PQ is the global Peccei-Quinn (PQ) symmetry. There are four fermions families in $$\bar{5}+10$$ representations of SU(5), a mirror family in $$5+\overline{10}$$ representations, and three SU(5) singlet Majorana fermions. The U(1)_X related anomalies all cancel in the presence of the Majorana neutrinos. The SU(5) symmetry is broken at M_GUT ≃ (6–9) × 10¹⁵ GeV and the proton lifetime τ_p is estimated to be well within the expected sensitivity of the future hyper-Kamiokande experiment, τ_p ≲ 1.3 × 10³⁵ years. The SU(5) breaking also triggers the breaking of the PQ symmetry, resulting in axion dark matter (DM), with the axion decay constant f_a of order M_GUT or somewhat larger. The CASPEr experiment can search for such an axion DM candidate. The Hubble parameter during inflation must be low, H_inf ≲ 10⁹ GeV, in order to successfully resolve the axion domain wall, axion DM isocurvature and SU(5) monopole problems. With the identification of the U(1)_X breaking Higgs field with the inflaton field, we implement inflection-point inflation, which is capable of realizing the desired value for H_inf . The vectorlike fermions in the model are essential for achieving successful unification of the SM gauge couplings as well as the phenomenological viability of both axion DM and inflation scenario.

Authors:

;

; Shafi, Qaisar

Publication Date:: Mon Sep 27 00:00:00 EDT 2021

Research Org.:: Univ. of Alabama, Tuscaloosa, AL (United States); Univ. of Delaware, Newark, DE (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1822494

Alternate Identifier(s):: OSTI ID: 1851638; OSTI ID: 1998084

Grant/Contract Number:: SC0012447; SC0013880

Resource Type:: Published Article

Journal Name:: Physical Review D

Additional Journal Information:: Journal Name: Physical Review D Journal Volume: 104 Journal Issue: 5; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Subject:: 79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics; Physics; Axions; Cosmology; Grand unified models; Hypothetical particle physics models

Citation Formats


                    Okada, Nobuchika, Raut, Digesh, and Shafi, Qaisar. S U ( 5 ) × U ( 1 ) X axion model with observable proton decay.  United States: N. p., 2021. 
Web.  doi:10.1103/PhysRevD.104.055041.

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                    Okada, Nobuchika, Raut, Digesh, & Shafi, Qaisar. S U ( 5 ) × U ( 1 ) X axion model with observable proton decay.  United States.  https://doi.org/10.1103/PhysRevD.104.055041

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                    Okada, Nobuchika, Raut, Digesh, and Shafi, Qaisar. Mon .  
"S U ( 5 ) × U ( 1 ) X axion model with observable proton decay".  United States.  https://doi.org/10.1103/PhysRevD.104.055041.

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@article{osti_1822494,

  title        = {S U ( 5 ) × U ( 1 ) X axion model with observable proton decay},

  author       = {Okada, Nobuchika and Raut, Digesh and Shafi, Qaisar},

  abstractNote = {We propose a SU(5) × U(1)X × U(1)PQ model, where U(1)X is the generalization of the B – L (baryon minus lepton number) gauge symmetry and U(1)PQ is the global Peccei-Quinn (PQ) symmetry. There are four fermions families in $\bar{5}+10$ representations of SU(5), a mirror family in $5+\overline{10}$ representations, and three SU(5) singlet Majorana fermions. The U(1)X related anomalies all cancel in the presence of the Majorana neutrinos. The SU(5) symmetry is broken at MGUT ≃ (6–9) × 1015 GeV and the proton lifetime τp is estimated to be well within the expected sensitivity of the future hyper-Kamiokande experiment, τp ≲ 1.3 × 1035 years. The SU(5) breaking also triggers the breaking of the PQ symmetry, resulting in axion dark matter (DM), with the axion decay constant fa of order MGUT or somewhat larger. The CASPEr experiment can search for such an axion DM candidate. The Hubble parameter during inflation must be low, Hinf ≲ 109 GeV, in order to successfully resolve the axion domain wall, axion DM isocurvature and SU(5) monopole problems. With the identification of the U(1)X breaking Higgs field with the inflaton field, we implement inflection-point inflation, which is capable of realizing the desired value for Hinf . The vectorlike fermions in the model are essential for achieving successful unification of the SM gauge couplings as well as the phenomenological viability of both axion DM and inflation scenario.},

  doi          = {10.1103/PhysRevD.104.055041},

  journal      = {Physical Review D},

  number       = 5,

  volume       = 104,

  place        = {United States},

  year         = {Mon Sep 27 00:00:00 EDT 2021},

  month        = {Mon Sep 27 00:00:00 EDT 2021}

}

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Classically conformal $U (1)^{'}$ extended standard model and Higgs vacuum stability
journal, July 2015

Unification, proton decay, and topological defects in non-SUSY GUTs with thresholds
journal, May 2019

Inflection-point $B - L$ Higgs inflation
journal, February 2017

Axions: Theory, Cosmology, and Experimental Searches
book, January 2008

Quark-lepton symmetry and B − L as the U(1) generator of the electroweak symmetry group
journal, April 1980

Axion inflation, proton decay, and leptogenesis in $S U (5) \times U (1)_{P Q}$
journal, April 2018

The landscape of QCD axion models
journal, July 2020

Hierarchy of Interactions in Unified Gauge Theories
journal, August 1974

Baryogenesis and lepton number violation
journal, May 1997

Resonant leptogenesis in the minimal $B - L$ extended standard model at TeV
journal, May 2011

B-L violating proton decay and late cosmological baryon production
journal, September 1982

Axion dark matter, proton decay and unification
journal, January 2020

$CP$ Conservation in the Presence of Pseudoparticles
journal, June 1977

Planck 2018 results: X. Constraints on inflation
journal, September 2020

Spontaneous breaking of global $B - L$ symmetry and matter-antimatter oscillations in grand unified theories
journal, January 1983

Barygenesis without grand unification
journal, June 1986

Is Baryon Number Conserved?
journal, September 1973

Erratum: Lepton number as the fourth "color"
journal, February 1975

Leptogenesis
journal, September 2008

Search for vectorlike leptons in multilepton final states in proton-proton collisions at s = 13 TeV
journal, September 2019

Lepton number as the fourth "color"
journal, July 1974

Weak-Interaction Singlet and Strong $CP$ Invariance
journal, July 1979

Search for proton decay via $p \to e^{+} π^{0}$ and $p \to μ^{+} π^{0}$ in $0.31 megaton \cdot years$ exposure of the Super-Kamiokande water Cherenkov detector
journal, January 2017

Neutrino masses and the scale of B-L violation
journal, September 1981

Search for bottom-type, vectorlike quark pair production in a fully hadronic final state in proton-proton collisions at $\sqrt{s} = 13 TeV$
journal, December 2020

SMART U(1)$$_X$$: standard model with axion, right handed neutrinos, two Higgs doublets and U(1)$$_X$$ gauge symmetry
journal, November 2020

Review of Particle Physics
journal, August 2020

Coleman-Weinberg potential in good agreement with WMAP
journal, June 2006

Leptogenesis constraints on B − L breaking Higgs boson in TeV scale seesaw models
journal, March 2018

Neutrino masses, neutral vector bosons and the scale of B−L breaking
journal, September 1991

Planck 2018 results: VI. Cosmological parameters
journal, September 2020

Magnetic Monopoles in Grand Unified Theories
journal, July 1980

Magnetic Monopoles
journal, December 1984

Magnetic monopoles in unified gauge theories
journal, September 1974

Nonexotic neutral gauge bosons
journal, August 2003

The QCD axion and unification
journal, November 2019

Neutrino Mass and Spontaneous Parity Nonconservation
journal, April 1980

Cosmic microwave background, matter–antimatter asymmetry and neutrino masses
journal, November 2002

Neutrino masses in SU(2) ⊗ U(1) theories
journal, November 1980

Erratum to: “Cosmic microwave background, matter–antimatter asymmetry and neutrino masses” [Nucl. Phys. B 643 (2002) 367]
journal, April 2008

Local $B - L$ Symmetry of Electroweak Interactions, Majorana Neutrinos, and Neutron Oscillations
journal, May 1980

A New Light Boson?
journal, January 1978

Axions: Theory and Cosmological Role
journal, October 2013