Axions and other very light axion-like particles appear in many extensions of the Standard
Model, and are leading candidates to compose part or all of the missing matter of the …

Four decades after its prediction, the axion remains the most compelling solution to the
strong-CP problem and a well-motivated dark matter candidate, inspiring a host of elegant …

A bstract Axion-like particles (ALPs), which are gauge-singlets under the Standard Model
(SM), appear in many well-motivated extensions of the SM. Describing the interactions of …

Dark sectors, consisting of new, light, weakly-coupled particles that do not interact with the
known strong, weak, or electromagnetic forces, are a particularly compelling possibility for …

Scattering and decay processes of thermal bath particles involving heavy leptons can dump
hot axions in the primordial plasma around the QCD phase transition. We compute their relic …

A bstract We assess the status of past and future experiments on lepton flavor violating (LFV)
muon and tau decays into a light, invisible, axion-like particle (ALP), a. We propose a new …

Abstract The International Axion Observatory (IAXO) will be a forth generation axion
helioscope. As its primary physics goal, IAXO will look for axions or axion-like particles …

Axion-like particles (ALPs) and photons can quantum mechanically interconvert when
propagating through magnetic fields, and ALP-photon conversion may induce oscillatory …

We review the physics potential of a next generation search for solar axions: the
International Axion Observatory (IAXO). Endowed with a sensitivity to discover axion-like …

Axionlike particles are a broad class of dark matter candidates which are expected to
behave as a coherent, classical field with a weak coupling to photons. Research into the …