Long-Lived Heavy Quarks: A Review

Figure 1

Lifetime 𝜏 in seconds (𝛾𝛽≃1) for a sequential heavy quark 𝑄 decaying to the lighter families by emitting a real 𝑊 boson, for 𝑚_𝑄=300 GeV/𝑐² (in blue) and 𝑚_𝑄=1800 GeV/𝑐² (in red). The three regions of interest refer to the conventions given in Table 4.