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Progress towards an improved comparison of the proton-to-antiproton charge-to-mass ratios

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Abstract

High-precision comparisons of the proton-to-antiproton charge-to-mass ratios provide sensitive tests of the fundamental charge, parity, time (CPT) invariance. In 2014, we performed such a measurement with a fractional precision of 69parts in a trillion (p.p.t.). In this article, we describe technical developments which were implemented to improve the precision of our previous measurement by at least a factor of 3.

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Acknowledgments

We acknowledge technical support from the Antiproton Decelerator group, CERN’s cryolab team, and all other CERN groups which provide support to Antiproton Decelerator experiments. We acknowledge financial support from the RIKEN Initiative Research Unit Program, RIKEN President Funding, RIKEN Pioneering Project Funding (EEE), RIKEN FPR Funding, RIKEN chief scientist program, the RIKEN JRA Program, the Max-Planck Society, and the Helmholtz-Gemeinschaft.

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Authors and Affiliations

  1. Ulmer Fundamental Symmetries Laboratory RIKEN, Wako, Japan

    Takashi Higuchi, James A. Harrington, Matthias J. Borchert, Pascal E. Blessing, Jack A. Devlin, Jonathan Morgner, Stefan Sellner, Christian Smorra, Matthew A. Bohman, Andreas H. Mooser, Georg L. Schneider, Markus Wiesinger, Yasunori Yamazaki & Stefan Ulmer

  2. Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan

    Takashi Higuchi & Yasuyuki Matsuda

  3. Max-Planck-Institut für Kernphysik, Heidelberg, Germany

    James A. Harrington, Matthew A. Bohman, Markus Wiesinger & Klaus Blaum

  4. Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany

    Matthias J. Borchert, Jonathan Morgner & Christian Ospelkaus

  5. GSI-Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany

    Pascal E. Blessing & Wolfgang Quint

  6. Institut für Physik, Johannes Gutenberg-Universität Mainz, Mainz, Germany

    Georg L. Schneider, Natalie Schön & Jochen Walz

  7. Physikalisch-Technische Bundesanstalt, Braunschweig, Germany

    Christian Ospelkaus

  8. Helmholtz-Institut Mainz, Mainz, Germany

    Jochen Walz

Authors
  1. Takashi Higuchi
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  2. James A. Harrington
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  3. Matthias J. Borchert
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  4. Pascal E. Blessing
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  5. Jack A. Devlin
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  6. Jonathan Morgner
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  7. Stefan Sellner
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  8. Christian Smorra
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  9. Matthew A. Bohman
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  10. Andreas H. Mooser
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  11. Georg L. Schneider
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  12. Natalie Schön
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  13. Markus Wiesinger
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  14. Klaus Blaum
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  15. Yasuyuki Matsuda
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  16. Christian Ospelkaus
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  17. Wolfgang Quint
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  18. Jochen Walz
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  19. Yasunori Yamazaki
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  20. Stefan Ulmer
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Corresponding author

Correspondence to Takashi Higuchi.

Additional information

This article is part of the Topical Collection on Proceedings of the 13th International Conference on Low Energy Antiproton Physics (LEAP 2018) Paris, France, 12-16 March 2018

Edited by Paul Indelicato, Dirk van der Werf, and Yves Sacquin

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Higuchi, T., Harrington, J.A., Borchert, M.J. et al. Progress towards an improved comparison of the proton-to-antiproton charge-to-mass ratios. Hyperfine Interact 239, 27 (2018). https://doi.org/10.1007/s10751-018-1499-x

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  • DOI: https://doi.org/10.1007/s10751-018-1499-x

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