$\vert \boldsymbol q_{{{\boldsymbol p}}}~+~\boldsymbol q_{{{\overline{\boldsymbol p}}}}\vert /{{\boldsymbol e}}$
INSPIRE search
A test of $\mathit CPT$ invariance. Note that the comparison of the ${{\overline{\mathit p}}}$ and ${{\mathit p}}$ charge-to-mass ratios given above is much better determined. See also a similar test involving the electron.
$\bf{<7 \times 10^{-10}}$ |
90 |
1 |
|
SPEC |
• • • We do not use the following data for averages, fits, limits, etc. • • • |
$<2 \times 10^{-9}$ |
90 |
1 |
|
SPEC |
$<1.0 \times 10^{-8}$ |
90 |
1 |
|
SPEC |
$<6 \times 10^{-8}$ |
90 |
1 |
|
SPEC |
$<5 \times 10^{-7}$ |
|
2 |
|
SPEC |
$<2 \times 10^{-5}$ |
|
3 |
|
RVUE |
1
HORI 2001 , HORI 2003 , HORI 2006 , and HORI 2011 use the more-precisely-known constraint on the ${{\overline{\mathit p}}}$ charge-to-mass ratio of GABRIELSE 1999 (see above) to get their results. Their results are not independent of the HORI 2001 , HORI 2003 , HORI 2006 , and HORI 2011 values for $\vert {\mathit m}_{{{\mathit p}}}−{\mathit m}_{{{\overline{\mathit p}}}}\vert /{\mathit m}_{{{\mathit p}}}$, above.
|
2
TORII 1999 uses the more-precisely-known constraint on the ${{\overline{\mathit p}}}$ charge-to-mass ratio of GABRIELSE 1995 (see above) to get this result. This is not independent of the TORII 1999 value for $\vert {\mathit m}_{{{\mathit p}}}−{\mathit m}_{{{\overline{\mathit p}}}}\vert /{\mathit m}_{{{\mathit p}}}$, above.
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3
HUGHES 1992 uses recent measurements of Rydberg-energy and cyclotron-frequency ratios.
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|
Conservation Laws: |
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References: |
| NAT 475 484 |
Two-Photon Laser Spectroscopy of Antiprotonic Helium and the Antiproton-to-Electron Mass Ratio |
| PRL 96 243401 |
Determination of the Antiproton-to-Electron Mass Ratio by Precision Laser Spectroscopy of ${{\overline{\mathit p}}}{}^{}\mathrm {He}{+}$ |
| PRL 91 123401 |
Direct Measurement of Transition Frequencies in Isolated ${{\overline{\mathit p}}}$ He${}^{+}$ Atoms, and New $\mathit CPT$-Violation Limits on the Antiproton Charge and Mass |
| PRL 87 093401 |
Sub-ppm Laser Spectroscopy of Antiprotonic Helium and $\mathit CPT$-Violation Limit on the Antiprotonic Charge and Mass |
| PR A59 223 |
Laser Measurements of the Density Shifts of Resonance Lines in Antiprotonic Helium Atoms and Stringent Constraint on the Antiproton Charge and Mass |
| PRL 69 578 |
Electric Charges of Positrons and Antiprotons |
|