Manifestation of the Nuclear Anapole Moment in M1 Transitions in Thallium
Abstract
We calculate nuclear spin-dependent parity non-conserving E1-amplitudes for optical transition 6p1/2,F -> 6p3/2,F' and for hyperfine transition 6p1/2,F -> 6p1/2,F' in Tl. Experimental limit on the former amplitude placed by Vetter et al. [PRL, 74, 2658 (1995)] corresponds to the anapole moment constant a = -0.26 0.27. Experiment on the hyperfine transition can give direct measurement of the spin-dependent amplitude, because spin-independent amplitude turns to zero.
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