trikluoninen

Trikluoninen is a theoretical term used in quantum chromodynamics (QCD) to denote a bound state formed by three gluons in a colour-singlet configuration. It is a member of the broader class of glueballs, particles composed entirely of gluons. The idea follows from the self-interaction of gluons, which in QCD allows color-neutral bound states without valence quarks.

Theoretical studies, including lattice QCD calculations and phenomenological models, explore possible arrangements of three gluons and their resulting quantum numbers. Three-gluon configurations are predicted to exist at higher masses than the lightest two-gluon glueballs, and they may mix with conventional quark-antiquark mesons, making experimental identification challenging.

Experimental searches in high-energy hadron collisions and in radiative decays of heavy quarkonia aim to observe trikluoninen states through their decay products, typically into pairs or multiparticle meson final states. To date, there is no unambiguous experimental confirmation of a three-gluon bound state.

Terminology: in Finnish-language contexts, trikluoninen refers to gluon-based bound states with three constituents. In international usage, researchers more commonly describe these as three-gluon glueballs or trigluon states.

See also: Glueball, Quantum chromodynamics, Lattice QCD, Hadron spectroscopy.