Opened 14 years ago
Closed 14 years ago
#383 closed defect (fixed)
Event generation for test matrix elements in combination with PDFs fails
| Reported by: | Christian Speckner | Owned by: | Juergen Reuter |
|---|---|---|---|
| Priority: | P1 | Milestone: | v2.0.5 |
| Component: | core | Version: | 2.0.4 |
| Severity: | minor | Keywords: | |
| Cc: |
Description
The following code fails with a mismatch between the structure function density matrices and the hard ME when entering the simulation step:
model = SM
process test = u, ubar => u, ubar {$method = "unit"}
sqrts = 1 TeV
beams = p, p => lhapdf
n_events = 100
simulate (test)
The same code without the structure function works fine. To me, the form of the error suggests an error in the color flow structure of the test ME (which seems to be trivial if I read the dump correctly), but I don't know the code well enough to really confirm that. Might be related to #382 for that reason...
Change History (3)
comment:1 Changed 14 years ago by
| Milestone: | → v2.0.5 |
|---|---|
| Severity: | normal → minor |
comment:2 Changed 14 years ago by
| Owner: | changed from kilian to Juergen Reuter |
|---|---|
| Priority: | P3 → P1 |
| Status: | new → assigned |
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I will have a look whether we can support this. In the worst case we just don't support it. (Which would be sad because then one could not plot PDFs with the pre-designed mechanism.)