Observation of a large atomic parity violation effect in ytterbium.
نویسندگان
چکیده
Atomic parity violation has been observed in the 6s(2 1)S(0)-->5d6s(3)D(1) 408-nm forbidden transition of ytterbium. The parity-violating amplitude is found to be 2 orders of magnitude larger than in cesium, where the most precise experiments to date have been performed. This is in accordance with theoretical predictions and constitutes the largest atomic parity-violating amplitude yet observed. This also opens the way to future measurements of neutron distributions and anapole moments by comparing parity-violating amplitudes for various isotopes and hyperfine components of the transition.
منابع مشابه
Towards measuring nuclear-spin-dependent and isotopic-chain atomic parity violation in Ytterbium
We discuss experiments aimed at measurements of atomic parity nonconservation (PNC) effects in the 6s 1S0 → 5d6s 3D1 transition (408 nm) in atomic Ytterbium (Z=70). According to theoretical predictions, the PNC-induced E1 amplitude of this transition is ∼ 100 times larger than the analogous amplitude in Cs. Such an experiment will determine differences in PNC effects between different hyperfine...
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ورودعنوان ژورنال:
- Physical review letters
دوره 103 7 شماره
صفحات -
تاریخ انتشار 2009