The question is rather simple, but I cannot seem to find a solid answer. I need the cross section of the following interaction:(adsbygoogle = window.adsbygoogle || []).push({});

[tex] e^- + p\rightarrow n+ \nu . [/tex]

I need the cross section using the form factors. There are many solutions for the interactions like:

[tex] n+ \nu\rightarrow e^- + p [/tex]

or

[tex] p+\overline{\nu}\rightarrow e^+ + n, [/tex]

but I am not sure which one of them is the right one for my case. I know that the lepton current is not T-invariant and I think that hadronic is, but I am not sure. I would be really thankful for some short explanation.

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# I Time invariance of weak interaciton e-p->\nu n

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