The muonic hydrogen Lamb-shift experiment

Publication type:
Journal article
Metadata:
Autoren
  • R Pohl
  • A Antognini
  • FD Amaro
  • F Biraben
  • JMR Cardoso
  • CAN Conde
  • A Dax
  • S Dhawan
  • LMP Fernandes
  • TW Hänsch
  • FJ Hartmann
  • VW Hughes
  • O Huot
  • P Indelicato
  • L Julien
  • P Knowles
  • F Kottmann
  • YW Liu
  • L Ludhova
  • CMB Monteiro
  • F Mulhauser
  • F Nez
  • P Rabinowitz
  • JMF dos Santos
  • LA Schaller
  • C Schwob
  • D Taqqu
  • JFCA Veloso
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000229595000008&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1139/P05-016
Externe Identifier
  • Clarivate Analytics Document Solution ID: 933AB
ISSN
0008-4204
Ausgabe der Veröffentlichung
4
Zeitschrift
CANADIAN JOURNAL OF PHYSICS
Paginierung
339 - 349
Datum der Veröffentlichung
2005
Status
Published
Titel
The muonic hydrogen Lamb-shift experiment
Sub types
  • Article
  • Proceedings Paper
Ausgabe der Zeitschrift
83

Data source: Web of Science (Lite)

Other metadata sources:
Abstract
<jats:p>The charge radius of the proton, the simplest nucleus, is known from electron-scattering experiments only with a surprisingly low precision of about 2%. The poor knowledge of the proton charge radius restricts tests of bound-state quantum electrodynamics (QED) to the precision level of about 6 × 10<jats:sup>–6</jats:sup>, although the experimental data themselves (1S Lamb shift in hydrogen) have reached a precision of 2 × 10<jats:sup>–6</jats:sup>. The determination of the proton charge radius with an accuracy of 10<jats:sup>–3</jats:sup>is the main goal of our experiment, opening a way to check bound-state QED predictions to a level of 10<jats:sup>–7</jats:sup>. The principle is to measure the 2S–2P energy difference in muonic hydrogen (µ<jats:sup>–</jats:sup>p) by infrared laser spectroscopy. The first data were taken in the second half of 2003. Muons from our unique very-low-energy muon beam are stopped at a rate of ~100 s<jats:sup>–1</jats:sup>in 0.6 mbar H<jats:sub>2</jats:sub>gas where the lifetime of the formed µp(2S) atoms is about 1.3 µs. An incoming muon triggers a pulsed multistage laser system that delivers ~0.2 mJ at λ ≈ 6 µm. Following the laser excitation µp(2S) → µp(2P) we observe the 1.9 keV X-rays from 2P–1S transitions using large area avalanche photodiodes. The resonance frequency, and, hence, the Lamb shift and the proton radius, is determined by measuring the intensity of these X-rays as a function of the laser wavelength. A broad range of laser frequencies was scanned in 2003 and the analysis is currently under way. PACS Nos.: 36.10.Dr, 14.20.Dh, 42.62.Fi</jats:p>
Autoren
  • R Pohl
  • A Antognini
  • FD Amaro
  • F Biraben
  • J MR Cardoso
  • C AN Conde
  • A Dax
  • S Dhawan
  • L MP Fernandes
  • TW Hänsch
  • FJ Hartmann
  • VW Hughes
  • O Huot
  • P Indelicato
  • L Julien
  • PE Knowles
  • F Kottmann
  • Y-W Liu
  • L Ludhova
  • C MB Monteiro
  • F Mulhauser
  • F Nez
  • P Rabinowitz
  • J MF dos Santos
  • LA Schaller
  • C Schwob
  • D Taqqu
  • JF CA Veloso
DOI
10.1139/p05-016
eISSN
1208-6045
ISSN
0008-4204
Ausgabe der Veröffentlichung
4
Zeitschrift
Canadian Journal of Physics
Sprache
en
Paginierung
339 - 349
Datum der Veröffentlichung
2005
Status
Published
Herausgeber
Canadian Science Publishing
Herausgeber URL
http://dx.doi.org/10.1139/p05-016
Datum der Datenerfassung
2024
Titel
The muonic hydrogen Lamb-shift experiment
Ausgabe der Zeitschrift
83

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