Measurement of the half-life of the T=$\frac{1}{2}$ mirror decay of ${}^{19}$Ne and its implication on physics beyond the standard model

Abstract

The ${\frac{1}{2}}^{+}\to {\frac{1}{2}}^{+}$ superallowed mixed mirror decay of ${}^{19}$Ne to ${}^{19}$F is excellently suited for high precision studies of the weak interaction. However, there is some disagreement on the value of the half-life. In a new measurement we have determined this quantity to be $T_{1/2}$ = $17.2832\pm 0.0051_{(stat)}$ $\pm 0.0066_{(sys)}$ s, which differs from the previous world average by 3 standard deviations. The impact of this measurement on limits for physics beyond the standard model such as the presence of tensor currents is discussed.

5 pages, 3 figures, 1 table

References in corpus (5)

• Superallowed 0+ to 0+ nuclear beta decays: A new survey with precision tests of the conserved vector current hypothesis and the standard model
• Ft values of the T = 1/2 mirror beta transitions
• Production of Radioactive Nuclides in Inverse Reaction Kinematics
• Limits on Tensor Coupling from Neutron $\beta$-Decay
• Search for Superscreening effect in Superconductor

Cited by in corpus (10)

• Symmetry violations in nuclear and neutron $\beta$ decay
• Precision measurement of the $\beta$-asymmetry in spin-polarized ${}^{37}\mathrm{K}$ decay
• $\mathcal{F}t$ values of the mirror $\beta$ transitions and the weak magnetism induced current in allowed nuclear $\beta$ decay
• Precision measurements with LPCTrap at GANIL
• Precision half-life measurement of the \boldmath${\beta }^{+}$ decay of \tsups{37}K
• A decay microscope for trapped neon isotopes
• Precise branching ratio measurements in ${}^{19}$Ne beta decay and fundamental tests of the weak interaction
• High Precision Measurement of the ${}^{19}$Ne Half-life using real-time digital acquisition
• Precision calculation of isospin-symmetry-breaking corrections to T=1/2 mirror decays using multi-reference charge-dependent density functional theory
• $A_{\beta }[E_{\beta }]$ in ${}^{37}$K decay: new physics with opposite $\beta$ helicity