Measurement of the Half-Life of the T = ½ Mirror Decay of 19Ne and its Implication on Physics Beyond the Standard Model.

Authors :: Broussard, L. J.
Back, H. O.
Boswell, M. S.
Crowell, A. S.
Dendooven, P.
Giri, G. S.
Howell, C. R.
Kidd, M. F.
Jungmann, K.
Kruithof, W. L.
Mol, A.
Onderwater, C. J. G.
Pattie Jr., R. W.
Shidling, P. D.
Sohani, M.
van der Hoek, D. J.
Rogachevskiy, A.
Traykov, E.
Versolato, O. O.
Willmann, L.
Source :: Physical Review Letters. 5/30/2014, Vol. 112 Issue 21, p212301-1-212301-5. 5p.
Publication Year :: 2014
Abstract: The ½ → ½ superallowed mixed mirror decay of 19Ne to 19F 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 T½ - 17.2832 ± 0.0051(stat) ± 0.0066(syst) 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. [ABSTRACT FROM AUTHOR]

Subjects :: *WEAK interactions (Nuclear physics)
*STANDARD model (Nuclear physics)
*TENSOR fields
*BRANCHING ratios
*QUANTUM theory
NEON isotope decay

Full Text Access

Tools