#124 closed task (fixed)
Validate FeynRules / MSSM in 2.0
| Reported by: | Christian Speckner | Owned by: | Christian Speckner |
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| Priority: | P5 | Milestone: | |
| Component: | UFO_fr_sarah | Version: | 2.0.0beta |
| Severity: | trivial | Keywords: | |
| Cc: |
Description
All said in summary.
Change History (7)
comment:1 Changed 15 years ago by
| Status: | new → assigned |
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comment:2 Changed 15 years ago by
| Summary: | Fix and validate majorana / clashing arrow type vertices in the FeynRules Interface (MSSM & friends) → Validate FeynRules / MSSM, both in 1.9x and 2.0 |
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| Type: | defect → task |
comment:4 Changed 15 years ago by
| Priority: | P3 → P5 |
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| Severity: | critical → trivial |
| Summary: | Validate FeynRules / MSSM, both in 1.9x and 2.0 → Validate FeynRules / MSSM in 2.0 |
For 1.9x, WHIZARD-FR and WHIZARD-stock now agree on the CATPISS processes at 3 sigma (one remaining bug breaking the gluino couplings is fixed in r1962). I'll do the W2 validation after I have finished the plugin business, but I don't expect any more difficulties there -> make trivial P5.
comment:5 Changed 15 years ago by
After two small interface fixes concerning sindarin output and TeX names in r2119, the generated W2 model works and agrees with W19x on catpiss at 3\sigma. Closing.
comment:6 Changed 15 years ago by
| Resolution: | → fixed |
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| Status: | assigned → closed |
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I've started working on this by comparing FeynRules? to the "intrinsic" MSSM in 1.94. I reproduced the discrepancies found by Benjamin Fuks in e+ e- -> n_i n_i type processes (n = Neutralino), the others must have been Monte Carlo fluctuations or some glitch on Benjamin's side of things. It turns out that the discrepancies were not related to the Majorana / clashing arrow feynman rules, but the product of a wrong sign at axial fermion-fermion-boson vertices (FeynRules? usually prefers LR over VA, so this didn't turn up previously). This is fixed in r1874 in my FeynRules? branch.
Although this reduces the number of known discrepancies to zero, the interface still needs to be fully validated with the MSSM, so I change this ticket to a task and leave it open.