TY - JOUR

T1 - Sensitivity of the YbOH molecule to P T -odd effects in an external electric field

AU - Petrov, Alexander

AU - Zakharova, Anna

N1 - Publisher Copyright: © 2022 American Physical Society.

PY - 2022/5

Y1 - 2022/5

N2 - An electron electric dipole moment (eEDM) search using laser-coolable triatomics such as YbOH is one of the most sensitive probes for physics beyond the standard model. The eEDM-induced energy shift is proportional to the polarization (P) of the molecule. Similarly to diatomics with an ω-doubling structure, it was assumed that for triatomics with an l-doubling structure, related to the vibrational angular momentum, P can be easily saturated to almost 100% with a moderate external electric field. We developed a method for the calculation of the properties of triatomic molecules and applied it to a calculation of P of YbOH174 in the first excited v=1 bending mode. Calculations showed that most of the levels reach less than 50% efficiency. We showed that this fact is related to the Hund's case b coupling scheme of YbOH. As the coupling scheme (for ω=1/2 molecules) approaches the a (or c) case, polarization increases up to 100%. The results of our calculations should be used for the correct extracting of the eEDM value from YbOH experiments and similar calculations are required for other molecules.

AB - An electron electric dipole moment (eEDM) search using laser-coolable triatomics such as YbOH is one of the most sensitive probes for physics beyond the standard model. The eEDM-induced energy shift is proportional to the polarization (P) of the molecule. Similarly to diatomics with an ω-doubling structure, it was assumed that for triatomics with an l-doubling structure, related to the vibrational angular momentum, P can be easily saturated to almost 100% with a moderate external electric field. We developed a method for the calculation of the properties of triatomic molecules and applied it to a calculation of P of YbOH174 in the first excited v=1 bending mode. Calculations showed that most of the levels reach less than 50% efficiency. We showed that this fact is related to the Hund's case b coupling scheme of YbOH. As the coupling scheme (for ω=1/2 molecules) approaches the a (or c) case, polarization increases up to 100%. The results of our calculations should be used for the correct extracting of the eEDM value from YbOH experiments and similar calculations are required for other molecules.

UR - http://www.scopus.com/inward/record.url?scp=85131309540&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/02e33bd5-2e03-3c9b-9e2d-1f0407d8356f/

U2 - 10.1103/PhysRevA.105.L050801

DO - 10.1103/PhysRevA.105.L050801

M3 - Article

AN - SCOPUS:85131309540

VL - 105

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

SN - 1050-2947

IS - 5

M1 - L050801

ER -