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 is the weak scale refers to? Does it...

Assume an event that happens at P=(ct:2,x:4) in some inertial frame of reference S. Assume a second inertial frame S' in standard configuration and $\beta=4/5$ ($\gamma=5/3$). The Lorentz transform is: $$ P'=\frac{5}{3}\begin{pmatrix} 1 & -4/5\\ -4/5 & 1\end{pmatrix}\begin{pmatrix} 2\\ 4\end{pmat...