Lepton/Anti-lepton energy asymmetry
I am producing events using the model given in this paper (https:/
define v = v1 v2 v3
generate n4 > v e+ e- QED=2 / w+ w- h
In the parameter card, I turn off the couplings of the sterile to the electron and muon flavours (thetae and thetamu = 0) for reasons that make sense in my analysis.
My problem/question concerns the energy distribution of the electron and the positron: they are slightly different, the spectrum of the electron is harder. The leptons are produced in pair in the decay of the Z boson. I know about the forward-backward asymmetry in the way the Z boson treats leptons and anti-leptons, but I have never heard of something similar in the energy distribution. I want to check with you that this asymmetry does not come from a wrong configuration or used of the tool.
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