Parity-violating asymmetry in the reactions 6Li$(n,\alpha)$3H and 10B$(n,\alpha)^{7}$Li* $\rightarrow$7Li $+$$\gamma$
Hyperfine Interactions(2011)
Abstract
We present two experiments measuring the parity-violating asymmetry (P-odd) of tritons emission in the reaction 6Li(n,α)3H and γ-quanta emission in the reaction 10B(n,α)7Li* → 7Li + γ with polarized cold neutrons, aiming at estimation of the weak meson-nucleon coupling constants. These experiments started in the PNPI, Gatchina and continued in the ILL, Grenoble. We describe an integral method to measure P-odd asymmetry and the two experiments. The results of our measurements are: \(\alpha{}_{P-odd}^{6Li}=(-8.8\pm2.1)\cdot10^{-8}\) and \(\alpha{}_{P-odd}^{10B}=(0.8\pm3.9)\cdot10^{-8}\).
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Key words
Slow neutrons, Weak interaction, Neutral currents
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