Second Homework

1) Rewrite the cross sections for inclusive ep scattering in terms of Q² and Bjorken x:

$$\frac{d^2\sigma}{d\Omega d\epsilon'} \rightarrow \frac{d^2\sigma}{d{Q^2} dx}$$ (1)

2) Write the components of the hadronic tensor, $W_{\mu \nu}$ explicitely and find the linear combinations that give the structure functions W₁ and W₂.