- #1

parton

- 83

- 1

Now I should consider the quantity

[tex] - \dfrac{2 (pq)^{2} + p^{2} q^{2}}{q^{2}} [/tex]

and compute the limit [tex] q \to 0 [/tex].

But I don't know how to perform the limit procedure. Could anyone help me please?

I already tried to consider the problem in a special frame with [tex] p=(p^{0}, \vec{0}) [/tex] but it doesn't help.