Electronic structure of ytterbium monohydroxide molecule to search for axionlike particles

Abstract

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 [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 with axionlike particles. The electron-nucleus interaction produced by the axion exchange induces T,P-violating a 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.

$\mathcal{P}$,$\mathcal{T}$-odd effects for RaOH molecule in the excited vibrational state

“…This allows to put constraints on the new physics on the energies much higher than accessible on the accelerator experiments. Besides eEDM the same measurements permit study of other P, T violating phenomena such as scalar-pseudoscalar nucleon-electron interaction [4], nuclear magnetic quadrupole moment [5] and interactions with new axionlike particles [6]. Some diatomic molecules with Ω = 1/2 (Ω is projection of total momentum on molecular axis) that a promising for the P,T -odd interaction measurements, such as RaF [7,8], YbF [9] etc, permit their laser cooling.…”