One-particle measurement of the antiproton magnetic moment

J. Disciacca; M. Marshall; K. Marable; G. Gabrielse; S. Ettenauer; E. Tardiff; R. Kalra; D. W. Fitzakerley; M. C. George; E. A. Hessels; C. H. Storry; M. Weel; D. Grzonka; W. Oelert; T. Sefzick

doi:10.1103/PhysRevLett.110.130801

One-particle measurement of the antiproton magnetic moment

J. Disciacca^*, M. Marshall, K. Marable, G. Gabrielse, S. Ettenauer, E. Tardiff, R. Kalra, D. W. Fitzakerley, M. C. George, E. A. Hessels, C. H. Storry, M. Weel, D. Grzonka, W. Oelert, T. Sefzick

^*Corresponding author for this work

Physics and Astronomy

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Abstract

For the first time a single trapped antiproton (p̄) is used to measure the p̄ magnetic moment μ_p̄. The moment μ_p̄=μ_p̄S/(/2) is given in terms of its spin S and the nuclear magneton (μ_N) by μ_p̄/ μ_N=-2.792 845±0.000 012. The 4.4 parts per million (ppm) uncertainty is 680 times smaller than previously realized. Comparing to the proton moment measured using the same method and trap electrodes gives μ_p̄/μ_p=-1.000 000±0.000 005 to 5 ppm, for a proton moment μ_p=μ_pS/(/2), consistent with the prediction of the CPT theorem. Published by the American Physical Society under the terms of the <uri xlink:href=http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Original language	English (US)
Article number	130801
Journal	Physical review letters
Volume	110
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.110.130801
State	Published - Mar 25 2013

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Physics and Astronomy(all)

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10.1103/PhysRevLett.110.130801

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title = "One-particle measurement of the antiproton magnetic moment",

abstract = "For the first time a single trapped antiproton ({\=p}) is used to measure the {\=p} magnetic moment μ{\=p}. The moment μ{\=p}=μ{\=p}S/(/2) is given in terms of its spin S and the nuclear magneton (μN) by μ{\=p}/ μN=-2.792 845±0.000 012. The 4.4 parts per million (ppm) uncertainty is 680 times smaller than previously realized. Comparing to the proton moment measured using the same method and trap electrodes gives μ{\=p}/μp=-1.000 000±0.000 005 to 5 ppm, for a proton moment μp=μpS/(/2), consistent with the prediction of the CPT theorem. Published by the American Physical Society under the terms of the ",

author = "J. Disciacca and M. Marshall and K. Marable and G. Gabrielse and S. Ettenauer and E. Tardiff and R. Kalra and Fitzakerley, {D. W.} and George, {M. C.} and Hessels, {E. A.} and Storry, {C. H.} and M. Weel and D. Grzonka and W. Oelert and T. Sefzick",

note = "Funding Information: The authors would like to thank Universiti Malaysia Sabah (UMS) for the research grant (SLB0002-SG-1/2011), Professor Dr. Michael Clemente Wong Vui Ling from the Biotechnology Research Institute (UMS) for providing molecular kits and research facilities, Associate Professor Dr. Chong Khim Phin from the Sustainable Palm Oil Research Unit (UMS) for providing the test fungus and Madam Madhumathi Pillai for proofreading the manuscript.",

year = "2013",

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doi = "10.1103/PhysRevLett.110.130801",

language = "English (US)",

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T1 - One-particle measurement of the antiproton magnetic moment

AU - Disciacca, J.

AU - Marshall, M.

AU - Marable, K.

AU - Gabrielse, G.

AU - Ettenauer, S.

AU - Tardiff, E.

AU - Kalra, R.

AU - Fitzakerley, D. W.

AU - George, M. C.

AU - Hessels, E. A.

AU - Storry, C. H.

AU - Weel, M.

AU - Grzonka, D.

AU - Oelert, W.

AU - Sefzick, T.

N1 - Funding Information: The authors would like to thank Universiti Malaysia Sabah (UMS) for the research grant (SLB0002-SG-1/2011), Professor Dr. Michael Clemente Wong Vui Ling from the Biotechnology Research Institute (UMS) for providing molecular kits and research facilities, Associate Professor Dr. Chong Khim Phin from the Sustainable Palm Oil Research Unit (UMS) for providing the test fungus and Madam Madhumathi Pillai for proofreading the manuscript.

PY - 2013/3/25

Y1 - 2013/3/25

N2 - For the first time a single trapped antiproton (p̄) is used to measure the p̄ magnetic moment μp̄. The moment μp̄=μp̄S/(/2) is given in terms of its spin S and the nuclear magneton (μN) by μp̄/ μN=-2.792 845±0.000 012. The 4.4 parts per million (ppm) uncertainty is 680 times smaller than previously realized. Comparing to the proton moment measured using the same method and trap electrodes gives μp̄/μp=-1.000 000±0.000 005 to 5 ppm, for a proton moment μp=μpS/(/2), consistent with the prediction of the CPT theorem. Published by the American Physical Society under the terms of the

AB - For the first time a single trapped antiproton (p̄) is used to measure the p̄ magnetic moment μp̄. The moment μp̄=μp̄S/(/2) is given in terms of its spin S and the nuclear magneton (μN) by μp̄/ μN=-2.792 845±0.000 012. The 4.4 parts per million (ppm) uncertainty is 680 times smaller than previously realized. Comparing to the proton moment measured using the same method and trap electrodes gives μp̄/μp=-1.000 000±0.000 005 to 5 ppm, for a proton moment μp=μpS/(/2), consistent with the prediction of the CPT theorem. Published by the American Physical Society under the terms of the

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One-particle measurement of the antiproton magnetic moment

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