| Issue |
EPJ Web of Conferences
Volume 66, 2014
INPC 2013 – International Nuclear Physics Conference
|
|
|---|---|---|
| Article Number | 05020 | |
| Number of page(s) | 4 | |
| Section | Fundamental Symmetries and Interactions in Nuclei | |
| DOI | https://doi.org/10.1051/epjconf/20146605020 | |
| Published online | 20 March 2014 | |
https://doi.org/10.1051/epjconf/20146605020
Antiproton–to–electron mass ratio determined by two-photon laser spectroscopy of antiprotonic helium atoms
1 Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany
2 Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
3 Wigner Research Center of Physics, H-1525 Budapest, Hungary
4 Paul Scherrer Institut, CH-5232 Villigen, Switzerland
5 Stefan Meyer Institut für Subatomare Physik, Boltzmanngasse 3, Vienna 1090, Austria
6 Dipartimento di Ingegneria dell’Informazione, Università di Brescia and Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Brescia, I-25133 Brescia, Italy
a e-mail: Anna.Soter@mpq.mpg.de
Published online: 20 March 2014
The ASACUSA collaboration of CERN has recently carried out two-photon laser spectroscopy of antiprotonic helium atoms. Three transition frequencies were determined with fractional precisions of 2.3–5 parts in 109. By comparing the results with three-body QED calculations, the antiproton-to-electron mass ratio was determined as 1836.1526736(23).
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.