Comprehensive analysis of beta decays within and beyond the Standard Model

Abstract

Precision measurements in allowed nuclear beta decays and neutron decay are reviewed and analyzed both within the Standard Model and looking for new physics. The analysis incorporates the most recent experimental and theoretical developments. The results are interpreted in terms of Wilson coefficients describing the effective interactions between leptons and nucleons (or quarks) that are responsible for beta decay. New global fits are performed incorporating a comprehensive list of precision measurements in neutron decay, superallowed $0^{+}\to 0^{+}$ transitions, and other nuclear decays that include, for the first time, data from mirror beta transitions. The results confirm the $V$-$A$ character of the interaction and translate into updated values for $V_{ud}$ and $g_A$ at the $10^{-4}$ level. We also place new stringent limits on exotic couplings involving left-handed and right-handed neutrinos, which benefit significantly from the inclusion of mirror decays in the analysis.

35 pages; v2: analysis updated, comments and references added; v3: compared to the JHEP version, typos in Eqs. 2.1, A3, A4 corrected, Eq. 4.4 updated, comment on aCORN update added in footnote 12

References in corpus (11)

• Tests of the standard electroweak model in beta decay
• Measurement of the Weak Axial-Vector Coupling Constant in the Decay of Free Neutrons Using a Pulsed Cold Neutron Beam
• Renormalization-group evolution of new physics contributions to (semi)leptonic meson decays
• Ft values of the T = 1/2 mirror beta transitions
• Measurement of the Beta-Neutrino Correlation of Sodium-21 using Shakeoff Electrons
• First-principles calculation of electroweak box diagrams from lattice QCD
• Measurement of the Neutrino Asymmetry Parameter B in Neutron Decay
• Precision measurements of the ${}^{60}$Co $\beta$-asymmetry parameter in search for tensor currents in weak interactions
• Kinematic sensitivity to the Fierz term of $\beta$-decay differential spectra
• Measurement of the $\beta$-asymmetry parameter of ${}^{67}$Cu in search for tensor type currents in the weak interaction
• Precision half-life measurement of the \boldmath${\beta }^{+}$ decay of \tsups{37}K

Cited by in corpus (41)

• Top, Higgs, Diboson and Electroweak Fit to the Standard Model Effective Field Theory
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• Low Energy Effective Field Theory Operator Basis at $d\le 9$
• Pion-induced radiative corrections to neutron beta-decay
• Effective field theory for radiative corrections to charged-current processes I: Vector coupling
• EFT at FASER$\nu$
• Dispersion relation analysis of the radiative corrections to $g_A$ in the neutron $\beta$-decay
• Semileptonic tau decays beyond the Standard Model
• Particle Physics at the European Spallation Source
• Testing Lepton Flavor Universality with Pion, Kaon, Tau, and Beta Decays
• Update on $|V_{us}|$ and $|V_{us}/V_{ud}|$ from semileptonic kaon and pion decays
• EFT analysis of New Physics at COHERENT
• Precise Measurements of the Decay of Free Neutrons
• Assessment of the Dimension-5 Seesaw Portal and Impact of Exotic Higgs Decays on Non-Pointing Photon Searches
• Beta-decay implications for the W-boson mass anomaly
• $\mathcal{F}t$ values of the mirror $\beta$ transitions and the weak magnetism induced current in allowed nuclear $\beta$ decay
• Mapping the SMEFT to discoverable models
• Radiative corrections to semileptonic beta decays: Progress and challenges
• Ab initio calculation of the $\beta$ decay spectrum of ${}^6$He
• Updated evaluation of potential ultra-low Q value $\beta$-decay candidates
• The Standard Model theory of neutron beta decay
• Sterile neutrinos with non-standard interactions in $\beta$- and $0\nu \beta \beta$-decay experiments
• Constraints on subleading interactions in beta decay Lagrangian
• Renormalization of beta decay at three loops and beyond
• Influence of the recoil-order and radiative correction on the beta decay correlation coefficients in mirror decays
• Magnetic structure of $A\le 10$ nuclei using the Norfolk nuclear models with quantum Monte Carlo methods
• Unleashing the Power of EFT in Neutrino-Nucleus Scattering
• The HIBEAM Instrument at the European Spallation Source
• Translationally invariant matrix elements of general one-body operators
• On the sensitivity of the D parameter to new physics
• Effective field theory in light of relative entropy
• Precision pulse shape simulation for proton detection at the Nab experiment
• The Role of Ab Initio Beta-Decay Calculations in Light Nuclei for Probes of Physics Beyond the Standard Model
• Study of silicon photomultipliers for use in neutron decay experiments
• Expanding RIB Capabilities at the Cyclotron Institute: \textsuperscript{3}He-LIG production with an Isobar Separator LSTAR
• Electron Mass Singularities in Semileptonic Kaon Decays
• Round table on Standard Model Anomalies
• Testing effective field theory with the most general neutron decay correlations
• The Beta-decay Paul Trap Mk IV: Design and commissioning
• Benchmarking projected generator coordinate method for nuclear Gamow-Teller transitions
• $A_{\beta }[E_{\beta }]$ in ${}^{37}$K decay: new physics with opposite $\beta$ helicity