Leptoquarks, axions and the unification of B, L, and Peccei-Quinn symmetries

Abstract

In this paper, axion models supplemented by leptoquarks and diquarks are systematically analyzed. Turning on some couplings to and among these latter states permits to unify the Peccei-Quinn symmetry with baryon (B) and lepton (L) numbers, such that the axion becomes associated to the spontaneous breaking of the three $U(1)$ symmetries. All possible four- and six-fermion patterns of B and L violation are discussed, including those inducing proton decay, with $\Delta B=1$ and $\Delta L=\pm 1,\pm 3$, neutron-antineutron oscillations with $\Delta B=2$, and Majorana neutrino masses with $\Delta L=2$. Scenarios in which one or two axion fields necessarily appear in any B and/or L violating operators are also constructed. Nucleon decays would then necessarily involve an axion in the final state, while neutron-antineutron oscillations would only happen in an axionic background. This could have implications for the neutron lifetime puzzle, and more generally, opens the door to new phenomenological and cosmological applications.

arXiv comment40 pages, 9 figures, 1 table. References added, minor changes and new tittle matching the version accepted for publication at Physical Review D

References in corpus (55)

• Physics of leptoquarks in precision experiments and at particle colliders
• Measurement of the permanent electric dipole moment of the neutron
• Improved Determination of the Neutron Lifetime
• Baryon Number and Lepton Universality Violation in Leptoquark and Diquark Models
• Neutrinoless Double Beta Decay and Physics Beyond the Standard Model
• Flaxion: a minimal extension to solve puzzles in the standard model
• Dark Matter Interpretation of the Neutron Decay Anomaly
• The Axiflavon
• On the single leptoquark solutions to the $B$-physics anomalies
• Neutron-Antineutron Oscillations: Theoretical Status and Experimental Prospects
• Axiogenesis
• Simplified models with baryon number violation but no proton decay
• Measurement of the Neutron Lifetime by Counting Trapped Protons in a Cold Neutron Beam
• $(g-2{)}_{\mu }$, Lepton Flavour Violation and $Z$ Decays with Leptoquarks: Correlations and Future Prospects
• Neutron-Anti-Neutron Oscillation: Theory and Phenomenology
• Neutron lifetime puzzle and neutron -- mirror neutron oscillation
• Muon $g-2$ and scalar leptoquark mixing
• Dark Matter, Baryon Asymmetry, and Spontaneous B and L Breaking
• Search for pairs of scalar leptoquarks decaying into quarks and electrons or muons in $\sqrt{s}=13$ TeV pp collisions with the ATLAS detector
• Baryogenesis from Strong CP Violation and the QCD Axion
• Minimal Flavor Violation, Seesaw, and R-parity
• Correlating $h\to {\mu }^{+}{\mu }^{-}$ to the Anomalous Magnetic Moment of the Muon via Leptoquarks
• Search for singly and pair-produced leptoquarks coupling to third-generation fermions in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• The Majoron at two loops
• Minimal Flavour Violation for Leptoquarks
• The Minimal Flavour Violating Axion
• CP Violating Baryon Oscillations
• Neutron-antineutron Oscillation and Baryonic Majoron: Low Scale Spontaneous Baryon Violation
• Search for pair production of third-generation scalar leptoquarks decaying into a top quark and a $\tau$-lepton in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Strong CP problem with low-energy emergent QCD: The 4321 case
• $\nu$DFSZ: a technically natural non-supersymmetric model of neutrino masses, baryogenesis, the strong CP problem, and dark matter
• Search for pair production of scalar leptoquarks decaying into first- or second-generation leptons and top quarks in proton-proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Leptoquarks in Oblique Corrections and Higgs Signal Strength: Status and Prospects
• Complete Lagrangian and Set of Feynman Rules for Scalar Leptoquarks
• Neutron's Dark Secret
• Axions are blind to anomalies
• Experimental Search for Neutron to Mirror Neutron Oscillations as an Explanation of the Neutron Lifetime Anomaly
• New Paradigm for Baryon and Lepton Number Violation
• Light particles with baryon and lepton numbers
• Neutron--Antineutron Oscillations: Discrete Symmetries and Quark Operators
• Three-generation baryon and lepton number violation at the LHC
• The Anomalous Case of Axion EFTs and Massive Chiral Gauge Fields
• Axionic Electroweak Baryogenesis
• Proton stability from a fourth family
• Proton Stability in Leptoquark Models
• Axion Effective Action
• Flavoured Warped Axion
• Phenomenology of $n$-$\bar{n}$ Oscillations Revisited
• Baryon and lepton number intricacies in axion models
• Spontaneous proton decay and the origin of Peccei-Quinn symmetry
• Baryon and Lepton Number Violation with Scalar Bilinears
• A connection between flavour anomaly, neutrino mass, and axion
• Simple models with both baryon and lepton number violation by two units
• $\Delta B=2$ neutron decay into antiproton mode $n\to \bar{p}{e}^{+}\nu (\bar{\nu })$
• Baryon number non-conservation as Peccei-Quinn mechanism

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