Editing Meson (section)

=== Notes on neutral kaons ===
There are two complications with [[Electric charge|neutral]] [[kaon]]s:<ref name="Cronin"/>
* Due to [[Kaon#Neutral kaon mixing|neutral kaon mixing]], the {{Subatomic particle|link=yes|K-short0}} and {{Subatomic particle|link=yes|K-long0}} are not [[eigenstate]]s of [[strangeness]].  However, they ''are'' eigenstates of the [[weak force]], which determines how they [[Radioactive decay|decay]], so these are the particles with definite [[Mean lifetime|lifetime]].
* The [[linear combination]]s given in the table for the {{Subatomic particle|link=yes|K-short0}} and {{Subatomic particle|link=yes|K-long0}} are not exactly correct, since there is a small correction due to [[CP violation]].  See [[Kaon#CP violation|CP violation in kaons]].

Note that these issues also exist in principle for other neutral, [[flavour (particle physics)|flavored]] mesons; however, the weak eigenstates are considered separate particles only for kaons because of their dramatically different lifetimes.<ref name="Cronin">J.W. Cronin (1980)</ref>