Elementary particles listed by the fundamental interactions which affect them. Fundamental particles are listed in black, composite particles in blue, and bosons in green. Many particles, especially esoteric or highly theoretical particles, are not listed. Bosons are listed under the force they mediate. Data gathered from the Wikipedia articles on each particle, specifically the 'Interactions:' section of their infoboxes. [1] Neutrons are theorized to have a dipole moment, which would render them (very slightly) affected by the electromagnetic force despite their overall neutral charge. This has not been confirmed experimentally. [2] Pions come in three varieties: positively charged, negatively charged, and neutral. The charged varieties are affected by the electromagnetic force. The neutral variety is, like the neutron, theorized to have a dipole moment (see [1]). [3] Gravitons are theoretical particles predicted outside the Standard Model. [4] The W and Z bosons are listed here because they mediate the weak force. Both W and Z bosons have mass, and W bosons have charge, in addition to being the weak force carriers.