A 17 MeV pseudoscalar and the LSND, MiniBooNE and ATOMKI anomalies

Abstract

In the absence of any new physics signals at the Large Hadron Collider (LHC), anomalous results at low energy experiments have become the subject of increased attention. We focus on three such results from the LSND, MiniBooNE (MB), and ATOMKI experiments. A 17 MeV pseudoscalar mediator ($a^{\prime }$) can account for two (${}^8$Be and ${}^4$He) out of the three cases in which excess events have been seen in pair creation transitions in ATOMKI. We incorporate this mediator in a gauge invariant extension of the Standard Model (SM) with a second Higgs doublet and three singlet (seesaw) neutrinos ($N_i,i=1,2,3$). $N_{1,2}$ participate in an interaction in MB and LSND which, with $a^{\prime }$ as mediator, leads to the production of $e^{+}{e}^{-}$ pairs. The $N_i$ also lead to mass-squared differences for SM neutrinos in agreement with global oscillation data. We first show that such a model offers a natural joint solution to the MB and LSND excesses, providing excellent fits to their data. Next, using the values of the couplings to the quarks and electrons which are required to explain pair creation nuclear transition data for ${}^8$Be and ${}^4$He in ATOMKI, we show that these values still lead to fits for MB and LSND data. However, once ATOMKI is incorporated, we find that strong constraints from the decays $K^{+}\to {\pi }^{+}{a}^{\prime }(a^{\prime }\to e^{+}{e}^{-})$ and ${\pi }^{+}\to$ $e^{+}{\nu }_e{e}^{+}{e}^{-}$ come into play. While our solution is in conformity with the bounds on the former decay, it remains in tension with $90\%$ CL bounds on the latter. We also discuss other constraints from both collider and non-collider experiments and from electroweak precision data, stability and unitarity. We compute the contributions to the electron and muon $g-2$ up to two loops for our model. We discuss tests of the model in upcoming experiments.

arXiv comment40 pages, 6 figures and 3 tables, Replaced with the published version

References in corpus (116)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Theory and phenomenology of two-Higgs-doublet models
• A Supersymmetry Primer
• The Anatomy of Electro-Weak Symmetry Breaking. II: The Higgs bosons in the Minimal Supersymmetric Model
• The anomalous magnetic moment of the muon in the Standard Model
• The fate of hints: updated global analysis of three-flavor neutrino oscillations
• New Measurement of the Electron Magnetic Moment and the Fine Structure Constant
• Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
• Measurement of the fine-structure constant as a test of the Standard Model
• Leading hadronic contribution to the muon magnetic moment from lattice QCD
• The Search for Heavy Majorana Neutrinos
• The muon $g-2$ and $\alpha (M_Z^2)$: a new data-based analysis
• Complete Tenth-Order QED Contribution to the Muon g-2
• Refinements in electroweak contributions to the muon anomalous magnetic moment
• Reevaluation of the hadronic vacuum polarisation contributions to the Standard Model predictions of the muon g-2 and alpha(mZ) using newest hadronic cross-section data
• The global electroweak fit at NNLO and prospects for the LHC and ILC
• Measurement of the solar neutrino capture rate with gallium metal. III: Results for the 2002--2007 data-taking period
• Hadronic light-by-light scattering contribution to the muon anomalous magnetic moment revisited
• The $g-2$ of charged leptons, $\alpha (M_Z^2)$ and the hyperfine splitting of muonium
• New determination of the fine structure constant and test of the quantum electrodynamics
• Hadronic contribution to the muon anomalous magnetic moment to next-to-next-to-leading order
• Two-pion contribution to hadronic vacuum polarization
• The electroweak contributions to (g-2)_μ after the Higgs boson mass measurement
• Reanalysis of the GALLEX solar neutrino flux and source experiments
• Remarks on higher-order hadronic corrections to the muon g-2
• Dispersion relation for hadronic light-by-light scattering: two-pion contributions
• Tenth-Order QED Contribution to the Electron g-2 and an Improved Value of the Fine Structure Constant
• The hadronic light-by-light scattering contribution to the muon anomalous magnetic moment from lattice QCD
• Three-pion contribution to hadronic vacuum polarization
• Dispersion relation for hadronic light-by-light scattering: pion pole
• Pseudoscalar-pole contribution to the $(g_{\mu }-2)$: a rational approach
• Lee-Quigg-Thacker Bounds for Higgs Boson Masses in a Two-Doublet Model
• Observation of Anomalous Internal Pair Creation in ${}^8$Be: A Possible Signature of a Light, Neutral Boson
• Short-distance constraints for the HLbL contribution to the muon anomalous magnetic moment
• Update of the global electroweak fit and constraints on two-Higgs-doublet models
• Lattice calculation of the pion transition form factor with $N_f=2+1$ Wilson quarks
• Updated global analysis of neutrino oscillations in the presence of eV-scale sterile neutrinos
• Longitudinal short-distance constraints for the hadronic light-by-light contribution to $(g-2{)}_{\mu }$ with large-$N_c$ Regge models
• Revised and Improved Value of the QED Tenth-Order Electron Anomalous Magnetic Moment
• Updated Status of the Global Electroweak Fit and Constraints on New Physics
• ALPtraum: ALP production in proton beam dump experiments
• Hadronic vacuum polarization: $(g-2{)}_{\mu }$ versus global electroweak fits
• The muon $g$-2 and $\Delta \alpha$ connection
• Sterile Neutrinos
• Discovering New Light States at Neutrino Experiments
• Sterile neutrinos with eV masses in cosmology -- how disfavoured exactly?
• Dark Neutrino Portal to Explain MiniBooNE excess
• h\to γγIn Inert Higgs Doublet Model
• Dipole portal to heavy neutral leptons
• New constraints on light vectors coupled to anomalous currents
• Dark forces coupled to non-conserved currents
• The Short-Baseline Neutrino Program at Fermilab
• Status of Light Sterile Neutrino Searches
• Handbook of LHC Higgs Cross Sections: 3. Higgs Properties
• Global Constraints on a Heavy Neutrino
• Consistency of hadronic vacuum polarization between lattice QCD and the R-ratio
• Revisiting Scalar and Pseudoscalar Couplings with Nucleons
• The MiniBooNE anomaly and heavy neutrino decay
• Where Are We With Light Sterile Neutrinos?
• Double Bangs from New Physics in IceCube
• Not so Coy Dark Matter explains DAMA (and the Galactic Center excess)
• Constraints on Sterile Neutrinos in the MeV to GeV Mass Range
• Combining Experimental and Cosmological Constraints on Heavy Neutrinos
• U(1)' mediated decays of heavy sterile neutrinos in MiniBooNE
• Explaining LSND by a decaying sterile neutrino
• New Barr-Zee contributions to $(\mathbf{g}-2{)}_{\mu }$ in two-Higgs-doublet models
• Resolution of puzzles from the LSND, KARMEN, and MiniBooNE experiments
• A viable QCD axion in the MeV mass range
• Proposal to search for a dark photon in $e^{+}$ on target collisions at DA$\Phi$NE linac
• A new anomaly observed in ${}^4$He supports the existence of the hypothetical X17 particle
• Sterile Neutrinos: Cosmology vs Short-BaseLine Experiments
• Dark Neutrinos and a Three Portal Connection to the Standard Model
• Explaining $(g-2{)}_{\mu ,e}$, the KOTO anomaly and the MiniBooNE excess in an extended Higgs model with sterile neutrinos
• A study of electroweak vacuum metastability with a singlet scalar dark matter
• Constraints on a very light CP-odd Higgs of the NMSSM and other axion-like particles
• Testing New Physics Explanations of MiniBooNE Anomaly at Neutrino Scattering Experiments
• Constraints on inert dark matter from metastability of the electroweak vacuum
• Bounds on light sterile neutrino mass and mixing from cosmology and laboratory searches
• Probing Light Dark Matter with a Hadrophilic Scalar Mediator
• Copositive Criteria and Boundedness of the Scalar Potential
• New anomaly observed in ${}^{12}$C supports the existence and the vector character of the hypothetical X17 boson
• A Dark Seesaw Solution to Low Energy Anomalies: MiniBooNE, the muon $(g-2)$, and BaBar
• Heavy neutrino decays at MiniBooNE
• The Heavy Photon Search Test Detector
• Improved Constraints on Sterile Neutrinos in the MeV to GeV Mass Range
• Decaying Sterile Neutrinos and the Short Baseline Oscillation Anomalies
• Understanding the MiniBooNE and the muon and electron $g-2$ anomalies with a light $Z^{\prime }$ and a second Higgs doublet
• Muon Capture Constraints on Sterile Neutrino Properties
• Exploring a Non-Minimal Sterile Neutrino Model Involving Decay at IceCube and Beyond
• Dark sector origin of the KOTO and MiniBooNE anomalies
• QED Meson Description of the X17 and Other Anomalous Particles
• Very light CP-odd scalar in the Two-Higgs-Doublet Model
• On The Decaying-Sterile Neutrino Solution to the Electron (Anti)Neutrino Appearance Anomalies
• New limits on radiative sterile neutrino decays from a search for single photons in neutrino interactions
• Two-Higgs doublet solution to the LSND, MiniBooNE and muon $g-2$ anomalies
• Explaining the MiniBooNE Excess Through a Mixed Model of Oscillation and Decay
• Three Twin Neutrinos: Evidence from LSND and MiniBooNE
• Combining Sterile Neutrino Fits to Short Baseline Data with IceCube Data
• A New Light Higgs Boson and Short-Baseline Neutrino Anomalies
• Light vectors coupled to bosonic currents
• Explaining the MiniBooNE Anomalous Excess via Leptophilic ALP-Sterile Neutrino Coupling
• Severe Constraints on New Physics Explanations of the MiniBooNE Excess
• Model Independent Bounds on the Non-Oscillatory Explanations of the MiniBooNE Excess
• An Altarelli Cocktail for the MiniBooNE Anomaly?
• Icecube/DeepCore tests for novel explanations of the MiniBooNE anomaly
• Constraints on electromagnetic properties of sterile neutrinos from MiniBooNE results
• Constraints on Decaying Sterile Neutrinos from Solar Antineutrinos
• Dipole-Coupled Neutrissimo Explanations of the MiniBooNE Excess Including Constraints from MINERvA Data
• Neutrino Interactions with Matter and the MiniBooNE anomaly
• Challenges for a QCD Axion at the 10 MeV Scale
• Resonance refraction and neutrino oscillations
• Evading the Grossman-Nir bound with $\Delta I=3/2$ new physics
• Enhanced neutrino polarizability
• Quasi-Sterile Neutrinos from Dark Sectors I. BSM matter effects in neutrino oscillations and the short-baseline anomalies
• Tau data-driven evaluation of the Hadronic Vacuum Polarization

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