Sensitivity of the isotopologues of hydronium to variation of the electron-to-proton mass ratio

Abstract

We study the sensitivity of the microwave and submillimeter transitions of the isotopologues of hydronium to the variation of the electron-to-proton mass ratio mu. These sensitivities are enhanced for the low frequency mixed inversion-rotational transitions. The lowest frequency transition (6.6 GHz) takes place for isotopologue H2DO+ and respective sensitivity to mu-variation is close to 200. This is about two orders of magnitude larger than the sensitivity of the inversion transition in ammonia, which is currently used for the search of mu-variation in astrophysics.

arXiv comment6 pages; v2: references corrected

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Cited by in corpus (10)

• Methanol as a tracer of fundamental constants
• Perspective: Tipping the scales - search for drifting constants from molecular spectra
• Microwave and submillimeter molecular transitions and their dependence on fundamental constants
• Rotational spectrum of molecular ion NH^+ as a probe for alpha- and m_e/m_p-variation
• Accurate Prediction of the Ammonia Probes of a Variable Proton-to-Electron Mass Ratio
• Linear polyatomic molecules with Π ground state: sensitivity to variation of the fundamental constants
• Accurate prediction of H${}_3$O${}^{+}$ and D${}_3$O${}^{+}$ sensitivity coefficients to probe a variable proton-to-electron mass ratio
• Diatomic rovibronic transitions as potential probes for proton-to-electron mass ratio across cosmological time
• Sensitivity of microwave transition in H2O2 to variation of the electron-to-proton mass ratio
• Sensitivity of Tunneling-Rotational Transitions in Ethylene Glycol to Variation of Electron-to-Proton Mass Ratio