Abstract The Antiproton Decelerator (AD) facility of CERN began operation in 1999 to serve
experiments for studies of CPT invariance by precision laser and microwave spectroscopy of …

Abstract The Baryon Antibaryon Symmetry Experiment (BASE) aims at performing a
stringent test of the combined charge parity and time reversal (CPT) symmetry by comparing …

For the first time a single trapped antiproton (p¯) is used to measure the p¯ magnetic
moment μ p¯. The moment μ p¯= μ p¯ S/(ℏ/2) is given in terms of its spin S and the nuclear …

Heretofore undiscovered spin-0 or spin-1 bosons can mediate exotic spin-dependent
interactions between standard model particles. Here, we carry out the first search for …

A wide range of exotic bound systems incorporating antiprotons (atoms, atomic ions,
molecules or molecular ions) can be formed, in many cases simply by replacing at least one …

The proton magnetic moment in nuclear magnetons is measured to be μ p/μ N≡ g/2= 2.792
846±0.000 007, a 2.5 parts per million uncertainty. The direct determination, using a single …

Resolution of Single Spin Flips of a Single Proton Page 1 Resolution of Single Spin Flips of a
Single Proton A. Mooser,1,2 H. Kracke,1,2 K. Blaum,3,4 SA Bräuninger,3,4 K. Franke,3,5 C …

Novel interactions beyond the four known fundamental forces in nature (electromagnetic,
gravitational, strong and weak interactions), may arise due to" new physics" beyond the …

A new apparatus has been designed that aims at a direct precision measurement of the g-
factor of a single isolated proton or antiproton in a Penning trap. We present a thorough …

The magnetic moment of the electron, expressed by the g‐factor in units of the Bohr
magneton, is a key quantity in the theory of quantum electrodynamics (QED). Experiments …