Experimental tests of fundamental symmetries

Ongoing experiments and projects to test our understanding of fundamental inter-
actions and symmetries in nature have progressed significantly in the past few years. At high
energies the long searched for Higgs boson has been found; tests of gravity for antimatter
have come closer to reality; Lorentz invariance - up to now very well tested in electromag-
netic interactions - is now being challenged in dedicated experiments in weak interactions
as well; discrete symmetries are scrutinized in experiments on C, P, T, CP, and CPT through
searches for permanent electric dipole moments and precise measurements of atomic parity
violation and in precision measurements involving antiprotons; a new generation of pre-
cise flavor symmetry tests is coming up; and last but not least precision measurements of
Standard Model values of im
portant fundamental
constants and quan
tities such as the muon
magnetic anomaly are underway. All the ongoing projects in this most active field have a
robust potential for discovery of New Physics, i.e. physics not yet covered by the well estab-
lished Standard Model of particle physics. Antip
rotons have a central position in this lively
field with many new and novel upcoming experiments and facilities