cross-section calculation
I attempted to approach a process in two different way defined as follows,
1)
process proc_ee_ZHH = e1, E1 => Z, H, H
process proc_Z_mumu = Z => e2, E2
process proc_H_bb = H => b, B
unstable Z (proc_Z_mumu)
unstable H (proc_H_bb)
2)
process proc_ee_4b2mu = e1, E2 => b, B, b, B, e2, E2 {$restrictions = "3+4~H && 5+6~H && 7+8~Z"}
How are these handled differently with regards to the cross-section value whizard outputs. One thing I noticed was that the branching ratios of H and Z to the respective particles as defined in 1, are not included in the value of the cross-sections but it is included in method 2. This does not seem to explain all the differences. It seems that maybe a symmetry factor of 2 due to there being two H's in 1) is also not included.
Are there any other differences and are the differences I mention correct?
Thanks,
Nikhil
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- WHIZARD Edit question
- Assignee:
- Juergen Reuter Edit question
- Solved by:
- Juergen Reuter
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