Parvoon
Parvoon is a hypothetical elementary particle posited in certain extensions of the Standard Model of particle physics. The name, derived from the Latin parvus meaning small, signals its proposed light mass relative to many familiar particles. In many models, parvoons belong to a hidden or dark sector that interacts feebly with known particles through a portal, such as kinetic mixing with the photon or coupling to the Higgs field.
Proposed properties vary by model. Parvoons are typically described as bosons with relatively small mass and
Why it matters: if real, parvoons could help explain dark matter interactions, anomalies in precision measurements,
Experimental status: to date there is no confirmed observation of a parvoon. Experiments in collider physics,
See also: dark photon, hidden sector, portal interactions, beyond the Standard Model.