Large Vibrationally Induced Parity Violation Effects in CHDBrI${}^{+}$ $-$ A Promising Candidate for Future Experiments

Abstract

The isotopically chiral molecular ion CHDBrI${}^{+}$ is identified as an exceptionally promising candidate for the detection of parity violation in vibrational transitions. The largest predicted parity-violating frequency shift reaches 1.8 Hz for the hydrogen wagging mode which has a sub-Hz natural line width and its vibrational frequency auspiciously lies in the available laser range. In stark contrast to this result, the parent neutral molecule is two orders of magnitude less sensitive to parity violation. The origin of this effect is analyzed and explained. Precision vibrational spectroscopy of CHDBrI${}^{+}$ is feasible as it is amenable to preparation at internally low temperatures and resistant to predissociation, promoting long interrogation times (Landau et al.). The intersection of these properties in this molecular ion places the first observation of parity violation in chiral molecules within reach.

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Cited by in corpus (3)

• Chiral molecule candidates for trapped ion spectroscopy by ab initio calculations: from state preparation to parity violation
• Strong parity-violation effects induced by large-amplitude motions: A quantum-dynamics study of substituted chiral methanols
• Chiral Pt(Me-BPCH): Synthesis and theoretical investigation of parity violation sensitivity