Toward a Determination of the Proton-Electron Mass Ratio from the Lamb-Dip Measurement of HD

L.-G. Tao, A.-W. Liu, K. Pachucki, J. Komasa, Y. R. Sun, J. Wang, and S.-M. Hu
Phys. Rev. Lett. 120, 153001 – Published 9 April 2018
PDFHTMLExport Citation

Abstract

Precision spectroscopy of the hydrogen molecule is a test ground of quantum electrodynamics (QED), and it may serve for the determination of fundamental constants. Using a comb-locked cavity ring-down spectrometer, for the first time, we observed the Lamb-dip spectrum of the R(1) line in the overtone of hydrogen deuteride (HD). The line position was determined to be 217 105 182.79±0.03stat±0.08systMHz (δν/ν=4×1010), which is the most accurate rovibrational transition ever measured in the ground electronic state of molecular hydrogen. Moreover, from calculations including QED effects up to the order meα6, we obtained predictions for this R(1) line as well as for the HD dissociation energy, which are less accurate but signaling the importance of the complete treatment of nonadiabatic effects. Provided that the theoretical calculation reaches the same accuracy, the present measurement will lead to a determination of the proton-to-electron mass ratio with a precision of 1.3 parts per billion.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 22 December 2017

DOI:https://doi.org/10.1103/PhysRevLett.120.153001

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalGeneral Physics

Authors & Affiliations

L.-G. Tao1, A.-W. Liu1,2, K. Pachucki3, J. Komasa4, Y. R. Sun1,2, J. Wang1, and S.-M. Hu1,2,*

  • 1Hefei National Laboratory for Physical Sciences at Microscale, iChem center, University of Science and Technology of China, Hefei, 230026 China
  • 2CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026 China
  • 3Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland
  • 4Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznań, Poland

  • *Corresponding author. smhu@ustc.edu.cn

See Also

Sub-Doppler Frequency Metrology in HD for Tests of Fundamental Physics

F. M. J. Cozijn, P. Dupré, E. J. Salumbides, K. S. E. Eikema, and W. Ubachs
Phys. Rev. Lett. 120, 153002 (2018)

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 120, Iss. 15 — 13 April 2018

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×