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## Main Question or Discussion Point

Hi all, I'm trying to teach myself high energy physics and was wondering if any one knew a good reference site on calculating cross sections. I'm specifically trying to calculate the cross section for [tex] \nu _{\mu} + e^- \rightarrow \mu ^- + \nu_e[/tex] using the 4-fermi interaction.

Are there any good sites that talk about the four-fermi interaction and how to calculate the cross section with it? Or could someone here explain it to me?

Thanks!

Are there any good sites that talk about the four-fermi interaction and how to calculate the cross section with it? Or could someone here explain it to me?

Thanks!