<i>Ab initio</i>
 study of parity and time-reversal violation in laser-coolable triatomic molecules

Gaul, Konstantin; Berger, Robert

doi:10.1103/physreva.101.012508

Cited by 46 publications

(34 citation statements)

References 39 publications

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“…Finally, for precision measurements relying on CBGBs, increased molecular flux directly translates to increased sensitivity to new, symmetry-violating physics BSM. Specifically, the enhancement we demonstrate for both the 174 YbOH and 173 YbOH isotopologues are directly applicable to experiments sensitive to new physics in both the leptonic and hadronic sectors [3,53,[77][78][79].…”

Section: Discussionmentioning

confidence: 76%

Enhanced molecular yield from a cryogenic buffer gas beam source via excited state chemistry

et al. 2020

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We use narrow-band laser excitation of Yb atoms to substantially enhance the brightness of a cold beam of YbOH, a polyatomic molecule with high sensitivity to physics beyond the standard model (BSM). By exciting atomic Yb to the metastable 3 P 1 state in a cryogenic environment, we significantly increase the chemical reaction cross-section for collisions of Yb with reactants. We characterize the dependence of the enhancement on the properties of the laser light, and study the final state distribution of the YbOH products. The resulting bright, cold YbOH beam can be used to increase the statistical sensitivity in searches for new physics utilizing YbOH, such as electron electric dipole moment and nuclear magnetic quadrupole moment experiments. We also perform new quantum chemical calculations that confirm the enhanced reactivity observed in our experiment and compare reaction pathways of Yb( 3 P) with the reactants H 2 O and H 2 O 2 . More generally, our work presents a broad approach for improving experiments that use cryogenic molecular beams for laser cooling and precision measurement searches of BSM physics.

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Section: Discussionmentioning

confidence: 76%

Enhanced molecular yield from a cryogenic buffer gas beam source via excited state chemistry

et al. 2020

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“…The validity of this analytical relationship has been confirmed numerically in numerous electronic-structure studies of EDM enhancements and Ne-SPS interactions on other systems, for instance in Refs. [17,18,[60][61][62][63][64][65].…”

Section: Use Ofmentioning

confidence: 99%

P , T -Violating and Magnetic Hyperfine Interactions in Atomic Thallium

Fleig

Skripnikov

2020

Symmetry

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We present state-of-the-art string-based relativistic general-excitation-rank configuration interaction and coupled cluster calculations of the electron electric dipole moment, the nucleon–electron scalar-pseudoscalar, and the magnetic hyperfine interaction constants ( α d e , α C S , A | | , respectively) for the thallium atomic ground state 2 P 1 / 2 . Our present best values are α d e = − 558 ± 28 , α C S = 6.77 ± 0.34 [ 10 − 18 e cm], and A | | = 21172 ± 1059 [MHz]. The central value of the latter constant agrees with the experimental result to within 0.7% and serves as a measurable probe of the P , T -violating interaction constants. Our findings lead to a significant reduction of the theoretical uncertainties for P , T -odd interaction constants for atomic thallium but not to stronger constraints on the electron electric dipole moment, d e , or the nucleon–electron scalar-pseudoscalar coupling constant, C S .

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“…This is the way to increase the coherence time and, thus, to improve the sensitivity of the experiment as the uncertainty of the measured energy characteristic is inversely proportional to the coherence time. For this reason, the ytterbium monohydroxide (YbOH) molecule has been intensively considered for the T, P-violating effects search by several theoretical groups [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Electronic structure of the ytterbium monohydroxide molecule to search for axionlike particles

et al. 2021

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Recently, the YbOH molecule has been suggested as a candidate to search for the electron electric dipole moment (eEDM), which violates spatial parity (P) and time-reversal (T ) symmetries [I. Kozyryev and N. R. Hutzler, Phys. Rev. Lett. 119, 133002 (2017)]. In the present paper, we show that the same system can be used to measure coupling constants of the interaction of electrons and nucleus mediated by axionlike particles. The electron-nucleus interaction produced by the axion exchange can contribute to a T, P-violating EDM of the whole molecular system. We express the corresponding T, P-violating energy shift produced by this effect in terms of the axion mass and product of the axion-nucleus and axion-electron coupling constants.

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Ab initio study of parity and time-reversal violation in laser-coolable triatomic molecules

Cited by 46 publications

References 39 publications

Enhanced molecular yield from a cryogenic buffer gas beam source via excited state chemistry

Enhanced molecular yield from a cryogenic buffer gas beam source via excited state chemistry

P , T -Violating and Magnetic Hyperfine Interactions in Atomic Thallium

Electronic structure of the ytterbium monohydroxide molecule to search for axionlike particles

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