Makeup is missing small CP–violating term (see notes on neutral kaons below). [f] PDG reports the resonance width (Γ). Here the conversion τ =  is given instead. [g] The exact value depends on the method used. See the given reference for detail. There are two complications with neutral kaons:   Note that these issues also exist in principle for other neutral flavored mesons; however, the weak eigenstates are considered separate particles only for kaons because of their dramatically different lifetimes.