Amplitude calculation for process : e- e+ > j j

[subhparasara]

Dear FORM Team,

I was trying to calculate the invariant amplitude for

1. e- e+ > Z > q \bar{q}
2. e- e+ > \gamma > q \bar{q}

I was unable to find M1^2, M2^2 and cross terms M1*M2 (I am not sure whether this terms will be there in cross section calculation or not). Can you help me out ?

Thanks, Subhasish

[vermaseren]

Dear Subhasish,

I think it is better that for your physics questions you consult your physics teacher.

Sincerely yours

Jos Vermaseren

On 18 May 2018, at 09:36, subhparasara notifications@github.com wrote:

Dear FORM Team,

I was trying to calculate the invariant amplitude for

e- e+ > Z > q \bar{q} e- e+ > \gamma > q \bar{q} I was unable to find M1^2, M2^2 and cross terms M1*M2 (I am not sure whether this terms will be there in cross section calculation or not). Can you help me out ?

Thanks, Subhasish

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[subhparasara]

Dear Jos,

I am sorry for the confusion. Just saw and example in the manual, where the author has calculated the invariant amplitude of a scattering process in particle physics and then I thought to ask the question.

Or if you can give link of similar post related the topic of my interest, could be helpful for me.

Thanks, Subhasish