Discrepancies X-sections e+e- collisions
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Cesare Cazzaniga
Hello,
I have some problems related to understand the discrepancies I have found between MadGraph cross-sections and my references. For example, I tried to generate at sqrt(s) = 240 GeV:
1. e+ e- -> e+ e- Madgraph: 670 pb , Reference (BABAYAGA): 930 pb
2. e+ e- -> q q Madgraph: 12 pb, Reference (Whizard): 54.1 pb
3. e+ e- -> Z e e Madgraph: 0.155 pb, Reference (Whizard): 4.54 pb
Is it possible such a discrepancy ? How do I have to interpret it ?
Many thanks in advance
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