nhel and bwcutoff
Asked by
Beojan
We are studying the h h > b b b~ b~ process and we have a few questions:
1. We use loop_sm to generate the signal with h h > b b b~ b~ [QCD] and sm to generate p p > b b b~ b~ ,p p > j j b b~, and p p > j j j j backgrounds. In the background runcards, nhel defaults to 0 while in the signal runcard it defaults to 1. Do you think this could cause issues, and if so, how should we set nhel?
2. Going back a step, is h h > b b b~ b~ the right way to generate the signal or should we be asking for p p > h h > b b b~ b~?
Looking at the diagrams, the first seems to work.
3. One interesting set of diagrams is of the form p p > h* > h h. Since the h* is very off-shell, do we need to increase bwcutoff, and would increasing it cause any problems?
Thanks.
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- Solved by:
- Olivier Mattelaer
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