One-loop proton decay from Peccei-Quinn symmetry

Abstract

We promote the accidental $B+L$ symmetry of the Standard Model to a Peccei-Quinn (PQ) symmetry while realizing spontaneous proton decay radiatively. The PQ anomaly sector consists of vector-like quarks (VLQs), providing a Kim-Shifman-Vainshtein-Zakharov-type axion solution to the strong CP problem. After spontaneous PQ breaking, a residual ${\mathcal{Z}}_2$ symmetry remains, which forbids tree-level proton decay. The VLQs required to generate the QCD anomaly, together with scalar mediators, odd under the residual ${\mathcal{Z}}_2$, induce one-loop proton decay through the effective operator $u_R{u}_R{d}_R{e}_R$. We study its ultraviolet completions, featuring distinct vector-like fermion and scalar representations, and show that the resulting models lead to distinct predictions for the axion-to-photon coupling, testable in helioscope and haloscope experiments. We investigate proton and neutron decay pheneomenology focusing on the channel $p\to e^{+}{\pi }^0$. We also discuss axion dark matter in pre- and post-inflationary cosmology.

17 LaTeX pages; 3 figures. Minor changes in main text, Fig.3 updated with new plot added and references added. Matches version published in PLB

References in corpus (47)

• Dimension-Six Terms in the Standard Model Lagrangian
• Verifiable Radiative Seesaw Mechanism of Neutrino Mass and Dark Matter
• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• New CAST Limit on the Axion-Photon Interaction
• The QCD axion, precisely
• A Search for Invisible Axion Dark Matter with the Axion Dark Matter Experiment
• Extended Search for the Invisible Axion with the Axion Dark Matter Experiment
• A Revised Experimental Upper Limit on the Electric Dipole Moment of the Neutron
• A quantum-enhanced search for dark matter axions
• Axion dark matter from topological defects
• Gravitational Bose-Einstein condensation in the kinetic regime
• First Results from ABRACADABRA-10 cm: A Search for Sub-$\mu$eV Axion Dark Matter
• Axions from Strings: the Attractive Solution
• More Axions from Strings
• Search for "Invisible" Axion Dark Matter in the $3.3\text{-}4.2\mu$eV Mass Range
• Early-Universe Simulations of the Cosmological Axion
• Tunable axion plasma haloscopes
• Redefining the Axion Window
• Towards Closing the Window on Strongly Interacting Dark Matter: Far-Reaching Constraints from Earth's Heat Flow
• The dark-matter axion mass
• First Results from Axion Haloscope at CAPP around 10.7 $\mu$eV
• Unifying inflation with the axion, dark matter, baryogenesis and the seesaw mechanism
• Improved lattice computation of proton decay matrix elements
• Search for proton decay via $p\to e^{+}{\pi }^0$ and $p\to {\mu }^{+}{\pi }^0$ with an enlarged fiducial volume in Super-Kamiokande I-IV
• Isocurvature bounds on axions revisited
• Baryon Number, Lepton Number, and Operator Dimension in the Standard Model
• A Simple Motivated Completion of the Standard Model below the Planck Scale: Axions and Right-Handed Neutrinos
• Searching For Dark Matter with Plasma Haloscopes
• The Search for Stable, Massive, Elementary Particles
• Search for nucleon decay into charged antilepton plus meson in 0.316 megaton$\cdot$years exposure of the Super-Kamiokande water Cherenkov detector
• Conceptual Design of a New Large Superconducting Toroid for IAXO, the New International AXion Observatory
• $\nu$DFSZ: a technically natural non-supersymmetric model of neutrino masses, baryogenesis, the strong CP problem, and dark matter
• Spontaneous Breaking of Lepton Number and Cosmological Domain Wall Problem
• $\Delta L=3$ processes: Proton decay and LHC
• Proton decay at 1-loop
• Revisiting Isocurvature Bounds on the Minimal QCD Axion
• Baryon and lepton number intricacies in axion models
• Spontaneous proton decay and the origin of Peccei-Quinn symmetry
• Axion Paradigm with Color-Mediated Neutrino Masses
• Leptoquarks, axions and the unification of B, L, and Peccei-Quinn symmetries
• Astrophysical Constraints on Singlet Scalars at LHC
• Inflation and Higgs Phenomenology in a Model Unifying the DFSZ Axion with the Majoron
• Axion framework with color-mediated Dirac neutrino masses
• Exploring the viability of pseudo Nambu-Goldstone boson as ultralight dark matter in a mass range relevant for strong gravity applications
• Flavored Peccei-Quinn symmetries in the minimal $\nu$DFSZ model
• Baryon number non-conservation as Peccei-Quinn mechanism
• Dark Matter Induced Proton Decays