[Gate-users] electron positron annihilation in 3 photons

[Meysam Dadgar]

hello dear Gate users 
I have a question about electron positron annihilation, in physics process it seems that the annihilation of electron and positron in 3 or more photons disregard, is there any model to consider these photons also, because these photons are very important for me.
Best regards
Meysam
PhD student of Biophysics 
Poland