2017:groups:tools:resonance_aware
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2017:groups:tools:resonance_aware [2017/06/12 19:04] emanuele.re |
2017:groups:tools:resonance_aware [2017/06/15 14:00] emanuele.re |
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| * comparison powheg vs mc@nlo (any news from herwig, or sherpa?) | * comparison powheg vs mc@nlo (any news from herwig, or sherpa?) | ||
| - | Discussion on Monday: | + | ------------ |
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| + | **Discussion on Monday:** | ||
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| + | overview: {{:2017:2017_06_12.pdf |slides }} | ||
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| + | ATLAS perspective: slides | ||
| technicalities (bb4l generator): | technicalities (bb4l generator): | ||
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| * make sure that numerical accuracy reached in event generation from MC is the same as in TH-paper | * make sure that numerical accuracy reached in event generation from MC is the same as in TH-paper | ||
| - | * possible to have grids from the authors (seems to be a viable solution, as atlas and cms will agree - or already agreed - on the settings | + | * possible to have grids from the authors (seems to be a viable solution, as atlas and cms will agree - or already agreed - on the settings) |
| * if grids will be provided, need to agree on parameters to scan upon. It seems that order 20 runs will be enough (a scan would mostly be done using 5-10 values for mtop, and 2-3 values for hdamp) | * if grids will be provided, need to agree on parameters to scan upon. It seems that order 20 runs will be enough (a scan would mostly be done using 5-10 values for mtop, and 2-3 values for hdamp) | ||
| - | * | + | * It might even be possible to use the powheg reweighting machinery to avoid having to re-run all the grids. This might depend on how far mtop is moved from the central value. T. Jezo and collaborators have tried this. Perhaps it'd be useful to perform a closure-test, but using the outermost mtop values that atlas/cms would use. |
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| + | * this reweighting would miss the mtop dependence in R/B. There exists an experimental facility in powheg, to capture these effects via a reweighting, but it was implemented only for DY, and rarely used. Not clear it would work here. | ||
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| + | [ER: to be continued] | ||
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2017/groups/tools/resonance_aware.txt · Last modified: 2017/06/15 14:02 by emanuele.re
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