Particle physics today faces the challenge of explaining the mystery of dark matter, the origin
of matter over anti-matter in the Universe, the origin of the neutrino masses, the apparent …

Searches for the permanent electric dipole moments (EDMs) of molecules, atoms, nucleons
and nuclei provide powerful probes of CP violation both within the Standard Model and …

This Report summarizes the results of the activities of the LHC Higgs Cross Section Working
Group in the period 2014–2016. The main goal of the working group was to present the state …

In the context of string theory, axions appear to provide the most plausible solution of the
strong CP problem. However, as has been known for a long time, in many string-based …

We review several aspects of flavour-diagonal CP-violation, focussing on the role played by
the electric dipole moments (EDMs) of leptons, nucleons, atoms, and molecules, which …

We propose an experiment to search for QCD axion and axionlike-particle dark matter.
Nuclei that are interacting with the background axion dark matter acquire time-varying CP …

We report on a search for ultralow-mass axionlike dark matter by analyzing the ratio of the
spin-precession frequencies of stored ultracold neutrons and Hg 199 atoms for an axion …

High-precision measurements of violations of fundamental symmetries in atoms are a very
effective means of testing the standard model of elementary particles and searching for new …

We review recent mechanical experiments that test some of the most basic principles of
physics including the weak and strong forms of the Equivalence Principle, the gravitational …

We propose new signals for the direct detection of ultralight dark matter such as the axion.
Axion or axionlike particle dark matter may be thought of as a background, classical field …