# What does the "weak scale" mean?

In dark matter research, one of the properties of WIMPs is that "Interactions only through the weak nuclear force and gravity, or possibly other interactions with cross-sections no higher than the weak scale;" from Wikipedia of WIMPs, so I'm curious about what does the weak scale refers to? Does it refer to the electroweak scales? And why does the cross-section no higher than the weak scale?

Weak cross sections σ go like $$G_F^2$$, where, of course, $$G_F\sim 1/v^2 \approx 10^{-5} \hbox{GeV}^{-2}.$$ In natural units, the cross section has units of inverse energy squared. For a particle of 100 GeV annihilating weakly, you might have σ ~ 1/TeV² , so, then, fractions of a picobarn.