Editing Subatomic particle (section)

=== By decay ===
Most subatomic particles are not stable. All leptons, as well as baryons [[particle decay|decay]] by either the strong force or weak force (except for the proton). Protons are not known to [[Proton decay|decay]], although whether they are "truly" stable is unknown, as some very important Grand Unified Theories (GUTs) actually require it. The μ and τ muons, as well as their antiparticles, decay by the weak force. Neutrinos (and antineutrinos) do not decay, but a related phenomenon of [[neutrino oscillation]]s is thought to exist even in vacuums. The electron and its antiparticle, the [[positron]], are theoretically stable due to [[charge conservation]] unless a lighter particle having [[absolute value|magnitude]] of electric charge {{abbr|≤|less than or equal}}&nbsp;[[elementary charge|''e'']] exists (which is unlikely). Its charge is not shown yet.