Difference: LHCat2TeV (3 vs. 4)

Revision 42009-08-04 - AndrewHamilton

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META TOPICPARENT name="AndrewHamilton"

LHC at 2 TeV

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  Moving from 2 TeV to 6 TeV, we gain a factor ~3 in the cross section for Z and W production. By running at 2 TeV we will have fewer of these golden calibration events. This is clearly a disadvantage if we collect 100pb-1, but with ~10pb-1 the advantage is not clear because we don't get much with ~10pb-1 at 6 TeV anyways. So, if the 2009 run will be ~10pb-1, there is not much gained in W and Z at 6 TeV. We need to think about whether the statistics gained in these channels will really make a difference when considering a 'short' run.
These are very rough estimates. See Tom's slides for better estimates: http://indico.cern.ch/getFile.py/access?contribId=2&resId=1&materialId=slides&confId=65579

Focus our manpower

By removing the possibility to search for new physics, we will focus the entire collaboration on commissioning.

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