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ISOLDE Seminar
Searching for physics beyond the Standard Model using antiprotons at BASE
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Europe/Zurich
CERN
CERN
Description
The Standard Model of Particle Physics is extremely successful at describing Nature at the fundamental level, but it cannot explain the striking imbalance of matter over antimatter observed in our Universe. For that reason, a diverse physics program was set up at CERN’s Antiproton Decelerator facility to study different aspects of baryonic antimatter. Comparisons of matter and antimatter conjugates provide sensitive tests of Lorentz and CPT invariance, two of the cornerstones of the Standard Model.
One of the experiments at the Antiproton Decelerator is the Baryon Antibaryon Symmetry Experiment (BASE), dedicated to high-precision measurements of the fundamental properties of the proton and the antiproton. Using single-particle multi-Penning-trap techniques, we measure their charge-to-mass ratios, magnetic moments and lifetimes. All results so far have been compatible with Lorentz and CPT invariance.
In this seminar, I will present the results from our most recent antiproton campaign, involving a more precise measurement of the antiproton-to-proton charge-to-mass ratio, a test of the weak equivalence principle by studying the gravitational coupling to protons and antiprotons, and a search for both scalar and axion-like dark matter.