The theta meson ( θ ) is a hypothetical form of quarkonium (i.e. a flavourless meson) formed by a top quark ( t ) and top antiquark ( t ). As a P-odd and...

eta prime meson ( η′ ) are isosinglet mesons made of a mixture of up, down and strange quarks and their antiquarks. The charmed eta meson ( η c) and...

In particle physics, a kaon, also called a K meson and denoted K , is any of a group of four mesons distinguished by a quantum number called strangeness...

particle physics, the phi meson or ϕ meson is a vector meson formed of a strange quark and a strange antiquark. It was the ϕ meson's unusual propensity to...

of a meson. "Exotic" hadrons, containing more than three valence quarks, have been discovered in recent years. A tetraquark state (an exotic meson), named...

those that are, are dubbed "hadrons", which are now further classified as mesons (middle mass) and baryons (heavy weight). But the discovery of the neutral...

In particle physics, a meson (/ˈmiːzɒn, ˈmɛzɒn/) is a type of hadronic subatomic particle composed of an equal number of quarks and antiquarks, usually...

the two different types of mesons after the second meson was discovered, the initial mesotron particle was renamed the mu meson (the Greek letter μ [mu]...

In particle physics, a pion (/ˈpaɪ.ɒn/, PIE-on) or pi meson, denoted with the Greek letter pi ( π ), is any of three subatomic particles: π0 , π+ , and...

onto α Theta (gastropod), a genus of sea snails Theta functions, special functions of several complex variables Theta meson, a hypothetical meson in quantum...