Wursten, EJ;
Borchert, MJ;
Devlin, JA;
Erlewein, SR;
Fleck, M;
Harrington, JA;
Jäger, JI;
... Ulmer, S; + view all
(2023)
Testing CPT Invariance by High-Precision Comparisons of Fundamental Properties of Protons and Antiprotons at BASE.
In:
CPT and Lorentz Symmetry.
(pp. pp. 1-5).
World Scientific: Indiana University Bloomington, USA.
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Abstract
The BASE collaboration at the Antiproton Decelerator facility of CERN compares the fundamental properties of protons and antiprotons using advanced Penning-trap systems. In previous measurement campaigns, we measured the magnetic moments of the proton and the antiproton, reaching (sub-)parts-in-a-billion fractional uncertainty. In the latest campaign, we have compared the proton and antiproton charge-to-mass ratios with a fractional uncertainty of 16 parts in a trillion. In this contribution, we give an overview of the measurement campaign, and detail how its results are used to constrain nine spin-independent coefficients of the Standard-Model Extension in the proton and electron sector.
| Type: | Proceedings paper |
|---|---|
| Title: | Testing CPT Invariance by High-Precision Comparisons of Fundamental Properties of Protons and Antiprotons at BASE |
| Event: | Ninth Meeting on CPT and Lorentz Symmetry |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1142/9789811275388_0001 |
| Publisher version: | http://dx.doi.org/10.1142/9789811275388_0001 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10194342 |
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