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RESEARCH PRODUCT
A test of charge-parity-time invariance at the atto-electronvolt scale
S. SellnerStefan UlmerA. MooserH. NagahamaChristian SmorraJochen WalzYasunori YamazakiG. SchneiderKlaus BlaumWolfgang QuintNathan LeeferTakashi HiguchiYasuyuki Matsudasubject
Nuclear physicsPhysicsBaryonAntiparticleScale (ratio)Physics in GeneralAntimatterElectronvoltPräzisionsexperimente - Abteilung BlaumParity (mathematics)NucleonNuclear ExperimentAtto-description
We developed a novel fast measurement procedure for cyclotron frequency comparisons of two individual particles in a Penning trap, which enabled us to compare the charge-to-mass ratio of the proton and the antiproton with a fractional precision of 69 parts per trillion. To date this is the most precise test of charge-parity-time invariance using baryons. Our measurements were performed at cyclotron frequencies of about 30 MHz, which means that charge-parity-time symmetry holds at the atto-electronvolt scale.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-11-23 |