New limits on time-reversal invariance from the hyperfine structure of thallium fluoride

D. Schropp, D. Cho, T. Vold, E. A. Hinds

Research output: Contribution to journalArticle

14 Citations (Scopus)

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 languageEnglish
Pages (from-to)991-994
Number of pages4
JournalPhysical review letters
Volume59
Issue number9
DOIs
Publication statusPublished - 1987
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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