Sensitivity of transitions in internal rotor molecules to a possible variation of the proton-to-electron mass ratio

P. Jansen, I Kleiner, L.-H. Xu, W.M.G. Ubachs, H.L. Bethlem

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Recently, methanol was identified as a sensitive target system to probe variations of the proton-to-electron mass ratio μ. The high sensitivity of methanol originates from the interplay between overall rotation and hindered internal rotation of the molecule; that is, transitions that convert internal rotation energy into overall rotation energy, or vice versa, have an enhanced sensitivity coefficient, K
Original languageEnglish
Article number06250584
JournalPhysical Review A
Volume84
Issue number6
DOIs
Publication statusPublished - 2011

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