Lambda baryon
The Lambda baryons are a family of subatomic hadron particles that have the symbols Λ0, Λ+
c, Λ0
b, and Λ+
t and have +1 elementary charge or are neutral. They are baryons containing three different quarks: one up, one down, and one third quark, which can be a strange (Λ0), a charm (Λ+
c), a bottom (Λ0
b), or a top (Λ+
t) quark. The top Lambda is not expected to be observed as the Standard Model predicts the mean lifetime of top quarks to be roughly 5×10 s. This is about one-twentieth the timescale for strong interactions, and, therefore it does not form hadrons.