Always spell out the name of the particle – do not use the mathematical symbol in text.

The mathematical symbols may be used in diagrams only when they are spelled out in full in the accompanying caption. See graphs and charts.

Antiparticles or tetraparticles do not take hyphens: neutrino, antineutrino, quark, tetraquark. See antimatter.

Particles with a letter (such as B meson) take a hyphen only when they are used as a compound adjective:

The physicists detected lots of B mesons in the B-meson experiment. Next door, their colleagues at the charm-quark detector were looking for charm quarks.