Positron-neutrino correlation in the 0^+ \to 0^+ decay of ^{32}Ar

Abstract

The positron-neutrino correlation in the $0^{+}\to 0^{+}\beta$ decay of ${}^{32}$Ar was measured at ISOLDE by analyzing the effect of lepton recoil on the shape of the narrow proton group following the superallowed decay. Our result is consistent with the Standard Model prediction. For vanishing Fierz interference we find $a=0.9989\pm 0.0052\pm 0.0036$, which yields improved constraints on scalar weak interactions.

Cited by in corpus (37)

• Tests of the standard electroweak model in beta decay
• Probing Novel Scalar and Tensor Interactions from (Ultra)Cold Neutrons to the LHC
• New physics searches in nuclear and neutron $\beta$ decay
• Beta Decays and Non-Standard Interactions in the LHC Era
• Scalar interaction limits from the beta-neutrino correlation of trapped radioactive atoms
• Flavor & new physics opportunities with rare charm decays into leptons
• Measurement of the Beta-Neutrino Correlation of Sodium-21 using Shakeoff Electrons
• Standard Model tests with trapped radioactive atoms
• Symmetry violations in nuclear and neutron $\beta$ decay
• Search for a T-odd, P-even Triple Correlation in Neutron Decay
• Constraints on Scalar Couplings from ${\pi }^{\pm }\to l^{\pm }{\nu }_l$
• Elucidation of the anomalous A = 9 isospin quartet behaviour
• Precision measurements of the ${}^{60}$Co $\beta$-asymmetry parameter in search for tensor currents in weak interactions
• The WITCH experiment: Acquiring the first recoil ion spectrum
• $\mathcal{F}t$ values of the mirror $\beta$ transitions and the weak magnetism induced current in allowed nuclear $\beta$ decay
• Limits on tensor type weak currents from nuclear and neutron $\beta$~decays
• Neutrino mass constraints on beta decay
• A GEANT4 Monte-Carlo Simulation Code for precision beta spectroscopy
• Tritium Beta Decay, Neutrino Mass Matrices and Interactions Beyond the Standard Model
• Simultaneous Measurements of the Beta Neutrino Angular Correlation in ${}^{32}$Ar Pure Fermi and Pure Gamow-Teller Transitions using Beta-Proton Coincidences
• Positron-neutrino correlations in 32Ar and 33Ar Decays: Probes of Scalar weak currents and nuclear isospin mixing
• First detection and energy measurement of recoil ions following beta decay in a Penning trap with the WITCH experiment
• Design of a Unique Open-Geometry Cylindrical Penning Trap
• Revalidation of the isobaric multiplet mass equation for the $A=20$ quintet
• Constraints on subleading interactions in beta decay Lagrangian
• An experiment for the measurement of the bound-beta decay of the free neutron
• First Penning trap mass measurement of ${}^{36}$Ca
• Beyond Wigner's isobaric multiplet mass equation: Effect of charge-symmetry-breaking interaction and Coulomb polarization
• Possible new interactions of neutrino and the KATRIN experiment
• The WITCH Experiment: towards weak interactions studies. Status and prospects
• Detailed study of the decay of 32Ar
• Isospin Mixing and the Cubic Isobaric Multiplet Mass Equation in the Lowest T = 2, A = 32 Quintet
• Second T = 3/2 state in ${}^9$B and the isobaric multiplet mass equation
• Towards a first measurement of the free neutron bound beta decay detecting hydrogen atoms at a throughgoing beamtube in a high flux reactor
• Tensor interaction in coherent elastic neutrino-nucleus scattering
• $A_{\beta }[E_{\beta }]$ in ${}^{37}$K decay: new physics with opposite $\beta$ helicity
• Fundamental Symmetries and Conservation Laws