BASE—high-precision comparisons of the fundamental properties of protons and antiprotons

authored by: B. M. Latacz, B. P. Arndt, B. B. Bauer, J. A. Devlin, S. R. Erlewein, M. Fleck, J. I. Jäger, M. Schiffelholz, G. Umbrazunas, E. J. Wursten, F. Abbass, P. Micke, D. Popper, M. Wiesinger, C. Will, H. Yildiz, K. Blaum, Y. Matsuda, A. Mooser, C. Ospelkaus, W. Quint, A. Soter, J. Walz, Y. Yamazaki, C. Smorra, S. Ulmer
Abstract: Abstract: The BASE collaboration at the antiproton decelerator/ELENA facility of CERN compares the fundamental properties of protons and antiprotons with ultra-high precision. Using advanced Penning trap systems, we have measured the proton and antiproton magnetic moments with fractional uncertainties of 300 parts in a trillion (p.p.t.) and 1.5 parts in a billion (p.p.b.), respectively. The combined measurements improve the resolution of the previous best test in that sector by more than a factor of 3000. Very recently, we have compared the antiproton/proton charge-to-mass ratios with a fractional precision of 16 p.p.t., which improved the previous best measurement by a factor of 4.3. These results allowed us also to perform a differential matter/antimatter clock comparison test to limits better than 3 %. Our measurements enable us to set limits on 22 coefficients of CPT- and Lorentz-violating standard model extensions (SME) and to search for potentially asymmetric interactions between antimatter and dark matter. In this article, we review some of the recent achievements and outline recent progress towards a planned improved measurement of the antiproton magnetic moment with an at least tenfold improved fractional accuracy. Graphic Abstract: [Figure not available: see fulltext.].
Organisation(s): Institute of Quantum Optics
CRC 1227 Designed Quantum States of Matter (DQ-mat)
External Organisation(s): Ulmer Fundamental Symmetries Laboratory
CERN
Max Planck Institute for Nuclear Physics
GSI Helmholtz Centre for Heavy Ion Research
Johannes Gutenberg University Mainz
University of Tokyo
ETH Zurich
National Metrology Institute of Germany (PTB)
University Hospital Düsseldorf
Type: Article
Journal: European Physical Journal D
Volume: 77
ISSN: 1434-6060
Publication date: 05.06.2023
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Atomic and Molecular Physics, and Optics
Electronic version(s): https://doi.org/10.1140/epjd/s10053-023-00672-y (Access: Open)

BibTeX

@article{4293373ab893428b90a2165b201ab9ab,
title = "BASE—high-precision comparisons of the fundamental properties of protons and antiprotons",
abstract = "Abstract: The BASE collaboration at the antiproton decelerator/ELENA facility of CERN compares the fundamental properties of protons and antiprotons with ultra-high precision. Using advanced Penning trap systems, we have measured the proton and antiproton magnetic moments with fractional uncertainties of 300 parts in a trillion (p.p.t.) and 1.5 parts in a billion (p.p.b.), respectively. The combined measurements improve the resolution of the previous best test in that sector by more than a factor of 3000. Very recently, we have compared the antiproton/proton charge-to-mass ratios with a fractional precision of 16 p.p.t., which improved the previous best measurement by a factor of 4.3. These results allowed us also to perform a differential matter/antimatter clock comparison test to limits better than 3 %. Our measurements enable us to set limits on 22 coefficients of CPT- and Lorentz-violating standard model extensions (SME) and to search for potentially asymmetric interactions between antimatter and dark matter. In this article, we review some of the recent achievements and outline recent progress towards a planned improved measurement of the antiproton magnetic moment with an at least tenfold improved fractional accuracy. Graphic Abstract: [Figure not available: see fulltext.].",
author = "Latacz, {B. M.} and Arndt, {B. P.} and Bauer, {B. B.} and Devlin, {J. A.} and Erlewein, {S. R.} and M. Fleck and J{\"a}ger, {J. I.} and M. Schiffelholz and G. Umbrazunas and Wursten, {E. J.} and F. Abbass and P. Micke and D. Popper and M. Wiesinger and C. Will and H. Yildiz and K. Blaum and Y. Matsuda and A. Mooser and C. Ospelkaus and W. Quint and A. Soter and J. Walz and Y. Yamazaki and C. Smorra and S. Ulmer",
note = "Funding Information: We acknowledge the technical support by CERN, especially the Antiproton Decelerator and ELENA decelerator operation groups, CERN{\textquoteright}s Cryolab team and Engineering Department, and all other CERN groups which provide support to antiproton decelerator experiments. We acknowledge the financial support by RIKEN, the RIKEN EEE pioneering project funding, the RIKEN SPDR and JRA programme, the Max-Planck Society, the Max-Planck IMPRS-QD, the European Union (FunI-832848, STEP-852818), CRC 1227 “DQ-mat” (DFG 274200144), the Cluster of Excellence “Quantum Frontiers” (DFG 390837967), GSI-Darmstadt, Heinrich-Heine University Duesseldorf, the CERN fellowship programme, and the CERN Gentner programme. This work was supported by the Max-Planck, RIKEN, PTB Center for Time, Constants, and Fundamental Symmetries (C-TCFS). ",
year = "2023",
month = jun,
day = "5",
doi = "10.1140/epjd/s10053-023-00672-y",
language = "English",
volume = "77",
journal = "European Physical Journal D",
issn = "1434-6060",
publisher = "Springer New York",
number = "6",
}