Opened 14 years ago
Last modified 11 years ago
#133 closed task
Reconsider some default switches — at Version 3
| Reported by: | Frank Siegert | Owned by: | support@sherpa-mc.de |
|---|---|---|---|
| Priority: | major | Milestone: | |
| Component: | Unknown | Version: | 0.trunk |
| Keywords: | Cc: |
Description (last modified by )
Some switches that we might want to consider as defaults in the next major version:
Max_Epsilon 1e-3(overweighting is correctly handled now)WRITE_MAPPING_FILE=3CSS_AS_*_FAC=0.4FILE_SIZEshould probably be unlimited.- Set widths of SM particles to their tree-level values?
Please collect more that you would consider reasonable.
Change History (3)
comment:1 Changed 14 years ago by
| Description: | modified (diff) |
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comment:2 Changed 14 years ago by
comment:3 Changed 14 years ago by
| Description: | modified (diff) |
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Should we also set widths of SM particles to their tree-level values?
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The old options to adjust coupling factors in the CSS (and POWHEG) are removed and replaced by CSS_AS_FAC (and PH_CSS_AS_FAC) with r17003. Their default is set to one, and the NLL value of ~0.406 is implemented directly by the colour function. Hence CSS_AS_FAC now acts as an _additional_ coupling prefactor, whereas before it included the non-dynamic part of the NLL correction.