Abstract
We have made a very precise test of time-reversal invariance using nuclear-spin resonance in a thallium fluoride molecular beam. We searched for a shift of the 120-kHz Tl resonance when an external electric field was reversed relative to the nuclear spin and found it to be (-2.2±2.1)×10-3 Hz, less than 0.02 ppm and a fivefold improvement over any previous measurement. Our result imposes new constraints on the proton electric dipole moment and on CP nonconservation in strong and weak interactions.
Original language | English |
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Pages (from-to) | 991-994 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 59 |
Issue number | 9 |
DOIs | |
Publication status | Published - 1987 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy