0000000000931257

AUTHOR

Jack Disciacca

showing 2 related works from this author

Studies on Antihydrogen Atoms with the ATRAP Experiment at CERN

2013

The CPT theorem predicts the same properties of matter and antimatter, however, in the nearby Universe, we observe a huge imbalance of matter and antimatter. Therefore, it is intriguing to measure the properties of particles and antiparticles in order to contribute to an explanation of this phenomena. In this article, we will describe the experimental efforts of the ATRAP Collaboration in order to test the CPT theorem using antihydrogen atoms.

Nuclear physicsPhysics::Popular PhysicsPhysics::General PhysicsEngineeringLarge Hadron Colliderbusiness.industryPhysics::Atomic and Molecular ClustersGeneral Physics and AstronomyHigh Energy Physics::ExperimentAntihydrogenbusinessActa Physica Polonica B Proceedings Supplement
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One-Particle Measurement of the Antiproton Magnetic Moment

2013

\DeclareRobustCommand{\pbar}{\HepAntiParticle{p}{}{}\xspace} \DeclareRobustCommand{\p}{\HepParticle{p}{}{}\xspace} \DeclareRobustCommand{\mup}{$\mu_{p}${}{}\xspace} \DeclareRobustCommand{\mupbar}{$\mu_{\pbar}${}{}\xspace} \DeclareRobustCommand{\muN}{$\mu_N${}{}\xspace For the first time a single trapped \pbar is used to measure the \pbar magnetic moment ${\bm\mu}_{\pbar}$. The moment ${\bm\mu}_{\pbar} = \mu_{\pbar} {\bm S}/(\hbar/2)$ is given in terms of its spin ${\bm S}$ and the nuclear magneton (\muN) by $\mu_{\pbar}/\mu_N = -2.792\,845 \pm 0.000\,012$. The 4.4 parts per million (ppm) uncertainty is 680 times smaller than previously realized. Comparing to the proton moment measured using…

PhysicsParticle physicsProtonMagnetic momentAtomic Physics (physics.atom-ph)010308 nuclear & particles physicsOther Fields of PhysicsFOS: Physical sciencesGeneral Physics and Astronomy01 natural sciencesPhysics - Atomic PhysicsCrystallographyAntiproton0103 physical sciencesddc:550010306 general physicsNuclear magneton
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