Much progress in the theory of positron scattering on atoms has been made in the ten years
since the review of Surko et al (2005 J. Phys. B: At. Mol. Opt. Phys. 38 R57). We review this …

Antihydrogen, a positron bound to an antiproton, is the simplest antiatom. Its counterpart—
hydrogen—is one of the most precisely investigated and best understood systems in physics …

The potential of precision spectroscopy as a tool in systematic searches for effects of Lorentz
and CPT violation is investigated. Systems considered include hydrogen, antihydrogen …

Clock-comparison experiments are among the sharpest existing tests of Lorentz symmetry in
matter. We characterize signals in these experiments arising from modifications to electron …

Performing measurements of the properties of antihydrogen, the bound state of an
antiproton and a positron, and comparing the results with those for ordinary hydrogen, has …

Antihydrogen, the lightest atom consisting purely of antimatter, is an ideal laboratory to study
the CPT symmetry by comparison with hydrogen. With respect to absolute precision …

The ASACUSA collaboration at the Antiproton Decelerator of CERN aims at a precise
measurement of the antihydrogen ground-state hyperfine structure as a test of the …

The two-center convergent close-coupling method is used to calculate antihydrogen (H¯)
formation via positronium (Ps) scattering on antiprotons (p¯) at near threshold energies. For …

Abstract The ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons)
collaboration plans to measure the ground-state hyperfine splitting of antihydrogen in a …

We describe a multi-step “rotating wall” compression of a mixed cold antiproton–electron
non-neutral plasma in a 4.46 T Penning–Malmberg trap developed in the context of the …