The J/ψ (J/psi) meson /ˈdʒeɪ ˈsaɪ ˈmiːzɒn/ is a subatomic particle, a flavor-neutral meson consisting of a charm quark and a charm antiquark. Mesons formed...

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...

phenomena more readily than do baryons. But mesons can be quite massive: for example, the J/Psi meson ( J/ψ ) containing the charm quark, first seen 1974...

particle found in composite subatomic particles called hadrons such as the J/psi meson and the charmed baryons created in particle accelerator collisions. Several...

the charm quark was first seen in the J/Psi meson ( J/ψ ) in 1974, and the bottom quark in the upsilon meson ( ϒ ) in 1977. The top quark (the last and...

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

divergence) Pound per square inch, unit of pressure PSI (computational chemistry), software J/psi meson, subatomic particle Porous silicon Water potential...

and ϕ mesons are mixtures of the SU(3) wave functions as follows. ω = ψ 8 sin ⁡ θ + ψ 1 cos ⁡ θ {\displaystyle \omega =\psi _{8}\sin \theta +\psi _{1}\cos...

In particle physics, a pion (or a pi meson, denoted with the Greek letter pi: π ) is any of three subatomic particles: π0 , π+ , and π− . Each pion consists...

example, a baryon, like a proton or a neutron, composed of three quarks; or a meson, composed of two quarks), or an elementary particle, which is not composed...