New Measurement of the 1S-3S Transition Frequency of Hydrogen: Contribution to the Proton Charge Radius Puzzle

Physical Review Letters
Hélène FleurbaeyJocelyne Guéna

Abstract

We present a new measurement of the 1S-3S two-photon transition frequency of hydrogen, realized with a continuous-wave excitation laser at 205 nm on a room-temperature atomic beam, with a relative uncertainty of 9×10^{-13}. The proton charge radius deduced from this measurement, r_{p}=0.877(13)  fm, is in very good agreement with the current CODATA-recommended value. This result contributes to the ongoing search to solve the proton charge radius puzzle, which arose from a discrepancy between the CODATA value and a more precise determination of r_{p} from muonic hydrogen spectroscopy.

References

Jul 9, 2010·Nature·Randolf PohlFranz Kottmann
Dec 21, 2011·Physical Review Letters·Christian G PartheyTheodor W Hänsch
Apr 7, 2012·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Jocelyne GuénaSebastien Bize
Oct 7, 2017·Science·Axel BeyerThomas Udem

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Citations

May 2, 2018·Reports on Progress in Physics·Richard J HillAlberto Sirlin
Aug 24, 2018·Nature·M AhmadiJ S Wurtele
Nov 9, 2019·Physical Review Letters·L S DreissenK S E Eikema
Feb 6, 2020·The Review of Scientific Instruments·S F CooperD C Yost
Sep 15, 2020·The European Physical Journal. C, Particles and Fields·G JankaP Crivelli
Sep 5, 2020·Science·Masaki Hori
Nov 7, 2019·Nature·Jean-Philippe Karr, Dominique Marchand
Feb 23, 2020·Nature·UNKNOWN ALPHA Collaboration
Sep 1, 2018·Physical Review Letters·Mariusz PuchalskiKrzysztof Pachucki
Nov 28, 2020·Science·Wim Ubachs
Nov 28, 2020·Science·Alexey GrininThomas Udem
Jan 29, 2021·Nature·Julian J KrauthFranz Kottmann
May 15, 2021·Physical Review Letters·Nancy PaulPaul Indelicato

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