DISCRETE 2014: Fourth Symposium on Prospects in the Physics of Discrete Symmetries

Session

Parallel 13: Antimatter Experiments

5 Dec 2014, 16:59

Great Hall and several lecture theatres (King's College London, Strand Campus)

9. Testing the Weak Equivalence Principle with antimatter at CERN

Dr Mitsuhiro Kimura (Universitaet Bern (CH))

05/12/2014, 16:59

The AEgIS collaboration is planning to measure the gravitational acceleration of antihydrogen, the simplest atom consisting entirely of antimatter, with a precision of 1% as a first achievement. The experiment, based at the Antiproton Decelerator of CERN, provides important information for the development of a quantum theory of gravity. The experimental setup consists of a nested penning...

101. Towards precision measurements with trapped Antihydrogen

William Alan Bertsche (University of Manchester (GB))

05/12/2014, 17:29

Precise low-energy measurements of antimatter and subsequent comparison with equivalent matter measurements offer an experimental approach to address the question of why the Universe appears to be largely composed of matter. The observed abundance of matter relative to antimatter is not adequately explained by our present theories which would suggest that largely equal quantities should have...

96. Progress towards in-beam hyperfine spectroscopy of antihydrogen

Eberhard Widmann (Austrian Academy of Sciences (AT))

05/12/2014, 18:04

Antihydrogen is the simplest atom consisting purely of antimatter. Its matter counterpart, hydrogen, is one of the best studied atomic systems in physics. Thus comparing the spectra of hydrogen and antihydrogen offers some of the most sensitive tests of matter-antimatter symmetry. The ASACUSA collaboration is pursuing an experiment to measure the ground-state hyperfine splitting of...

67. Laser spectroscopy of metastable antiprotonic and pionic helium atoms

Masaki Hori (Max-Planck Institute of Quantum Optics (DE))

05/12/2014, 18:34

The ASACUSA collaboration at CERN carries out two-photon laser spectroscopy of metastable antiprotonic helium atoms, which are three-body systems composed of a helium nucleus, an antiproton, and an electron. By measuring the transition frequencies of this atom and comparing the results with three-body QED calculations, the antiproton-to-electron mass ratio was determined to a precision of 1.4...