We report the results of a laser experiment to search for the parity-nonconserving optical rotation in atomic bismuth. We work at wavelengths close to the 648-nm J=32 — J=52 M1 transition from the ground state. We find R=Im(E1M1)=(+2.7±4.7)×10−8, in disagreement with the theoretical value R=−30×10−8 predicted for this transition on the basis of the Weinberg-Salam model of the weak interactions combined with relativistic central-field atomic theory.
No description provided.
Forum