Abstract
The spin magnetic moment \(\mu^{\overline{p}}_{s}\) of the antiproton can be determined by comparing the measured transition frequencies in \(\overline{p}^4\)He + with three-body QED calculations. A comparison between the proton and antiproton can then be used as a test of CPT invariance. The highest measurement precision of the difference between the proton and the antiproton spin magnetic moments to date is 0.3%. A new experimental value of the spin magnetic moment of the antiproton was obtained as \(\mu^{\overline{p}}_{s} = -2.7862(83)\mu_{N}\), slightly better than the previously best measurement. This agrees with \(\mu^{p}_{s}\) within 0.24%. In 2009, a new measurement with antiprotonic 3He has been started. A comparison between the theoretical calculations and experimental results would lead to a stronger test of the theory and address systematic errors therein. A measurement of this state will be the first HF measurement on \(\overline{p}^3\)He + . We report here on the new experimental setup and the first tests.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Iwasaki, M., Nakamura, S.N., Shigaki, K., Shimizu, Y., Tamura, H., Ishikawa, T., Hayano, R.S., Takada, E., Widmann, E., Outa, H., Aoki, M., Kitching, P., Yamazaki, T.: Phys. Rev. Lett. 67, 1246–1249 (1991)
Yamazaki, T., Widmann, E., Hayano, R.S., Iwasaki, M., Nakamura, S.N., Shigaki, K., Hartmann, F.J., Daniel, H., von Egidy, T., Hofmann, P., Kim, Y.-S., Eades, J.: Nature 361, 238–240 (1993)
Yamazaki, T., Morita, N., Hayano, R.S., Widmann, E., Eades, J.: Phys. Rep. 366, 183–329 (2002)
Hayano, R.S., Hori, M., Horváth, D., Widmann, E.: Rep. Prog. Phys. 70(12), 1995–2065 (2007)
Bakalov, D., Korobov, V.I.: Phys. Rev. A 57, 1662–1667 (1998)
Korobov, V.I., Bakalov, D.: J. Phys. B 34, 519 (2001)
Kino, Y., Yamanaka, N., Kamimura, M., Kudo, H.: Hyperfine Interact. 146–147, 331–336 (2003)
Korobov, V.: Phys. Rev. A 73, 022509 (2006)
Korobov, V., Zhong, Z.-X.: Phys. Rev. A 80, 042506 (2009)
Hori, M., Eades, J., Widmann, E., Yamaguchi, H., Sakaguchi, J., Ishikawa, T., Hayano, R.S., Torii, H.A., Juhász, B., Horváth, D., Yamazaki, T.: Phys. Rev. Lett. 89, 093401 (2002)
Widmann, E.: Acta Phys. Pol. B 41, 249–259 (2010)
Pask, T., Barna, D., Dax, A., Hayano, R.S., Hori, M., Horváth, D., Juhász, B., Malbrunot, C., Marton, J., Ono, N., et al.: J. Phys. B At. Mol. Opt. Phys. 41, 081008 (2008)
Pask, T., Barna, D., Dax, A., Hayano, R.S., Hori, M., Horváth, D., Friedreich, S., Juhász, B., Massiczek, O., Ono, N., Sótér, A., Widmann, E.: Phys. Lett. B 678, 55–59 (2009)
Hu, E., et al.: Nucl. Phys. A 254, 403 (1975)
Roberts, B.L., et al.: Phys. Rev. D 12, 1232 (1975)
Kreissl, A., Hancock, A.D., Koch, H., Th. Kohler, Poth, H., Raich, U., Rohmann, D., Wolf, A., Tauscher, L., Nilsson, A., Suffert, M., Chardalas, M., Dedoussis, S., Daniel, H., von Egidy, T., Hartmann, F.J., Kanert, W., Plendl, H., Schmidt, G., Reidy, J.J.: Z. Phys. C 37, 557–561 (1988)
Widmann, E., Eades, J., Ishikawa, T., Sakaguchi, J., Tasaki, T., Yamaguchi, H., Hayano, R.S., Hori, M., Torii, H.A., Juhász, B., Horváth, D., Yamazaki, T.: Phys. Rev. Lett. 89, 243402 (2002)
Korenman, G.Y., Yudin, S.N.: J. Phys. B At. Mol. Opt. Phys. 39(6), 1473–1484 (2006)
Torii, H.A., Hayano, R.S., Hori, M., Ishikawa, T., Morita, N., Kumakura, M., Sugai, I., Yamazaki, T., Ketzer, B., Hartmann, F.J., von Egidy, T., Pohl, R., Maierl, C., Horváth, D., Eades, J., Widmann, E.: Phys. Rev. A 59, 223–229 (1999)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
This article is published under an open access license. Please check the 'Copyright Information' section either on this page or in the PDF for details of this license and what re-use is permitted. If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and re-use information, please contact the Rights and Permissions team.
About this article
Cite this article
Friedreich, S., Barna, D., Dax, A. et al. Spectroscopy of the hyperfine structure of antiprotonic 4He and 3He. Hyperfine Interact 199, 337–346 (2011). https://doi.org/10.1007/s10751-011-0329-1
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10751-011-0329-1