Article
Version 1
Preserved in Portico This version is not peer-reviewed
Two-Photon Vibrational Transitions in O2+ as Probes of Variation of the Proton-to-Electron Mass Ratio
Version 1
: Received: 31 October 2018 / Approved: 2 November 2018 / Online: 2 November 2018 (12:58:06 CET)
A peer-reviewed article of this Preprint also exists.
Carollo, R.; Frenett, A.; Hanneke, D. Two-Photon Vibrational Transitions in
Abstract
Vibrational overtones in deeply bound molecules are sensitive probes for variation of the proton-to-electron mass ratio μ. In nonpolar molecules, these overtones may be driven as two-photon transitions. Here, we present procedures for experiments with O2+, including state-preparation through photoionization, a two-photon probe, and detection. We calculate transition dipole moments between all X2Пg vibrational levels and those of the A2Пu excited electronic state. Using these dipole moments, we calculate two-photon transition rates and AC-Stark-shift systematics for the overtones. We estimate other systematic effects and statistical precision. Two-photon vibrational transitions in O2+ provide multiple routes to improved searches for μ variation.
Keywords
precision measurements; fundamental constants; variation of constants; proton-to-electron mass ratio; molecular ions; forbidden transition; two-photon transition; vibrational overtone
Subject
Physical Sciences, Atomic and Molecular Physics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment