#343 closed defect (fixed)
Fix phase at the effective HAZ vertex.
| Reported by: | Christian Speckner | Owned by: | Juergen Reuter |
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| Priority: | P2 | Milestone: | v2.2.2 |
| Component: | core | Version: | 2.0.2 |
| Severity: | normal | Keywords: | |
| Cc: |
Description
While I fixed the effective hgg and haa vertices, the haz vertex still contains a suspicious abs(). This should be removed and replaced by the proper phase, but for that, the vertex factor has to be recalculated. I'll do this when I find time, but this is not urgent, and so I am rating this ticked down.
Change History (12)
comment:1 Changed 12 years ago by
| Milestone: | v2.2.0 → v2.1.0 |
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| Priority: | P3 → P2 |
comment:2 Changed 12 years ago by
| Milestone: | v2.1.0 → v2.0.8 |
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| Priority: | P2 → P0 |
| Severity: | minor → normal |
ATLAS actually wants to use this, ranking up very high!
comment:3 Changed 12 years ago by
| Milestone: | v2.0.8 → v2.1.0 |
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comment:4 Changed 12 years ago by
| Summary: | Fix phase at the effective haz vertex. → Fix phase at the effective HAZ vertex. |
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comment:5 Changed 12 years ago by
| Milestone: | v2.1.1 → v2.1.2 |
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comment:7 Changed 12 years ago by
| Owner: | changed from Christian Speckner to Juergen Reuter |
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| Status: | new → assigned |
I will recheck the calculations by CS on Hgg and HAA vertices and then try to figure out what is going on with the HAZ vertex.
comment:8 Changed 11 years ago by
| Milestone: | v2.2.0 → v2.2.1 |
|---|---|
| Priority: | P0 → P2 |
comment:9 Changed 11 years ago by
Step 1 done: understood CS' calculation completely, for Hgg vertex absolute value and full phase checked!
comment:10 Changed 11 years ago by
Step 2 done: redid the HAA calculation, absolute value and phase are correct.
comment:12 Changed 11 years ago by
One final remark: the UV divergence is solved, see Ansgar's habil thesis, it was the HAZ counterterm which does the job.
With respect to a possible Higgs evidence in the range 120-130 GeV this becomes a lot more relevant than thought.