- Mario generated over the weekend MBR MC. This he compared with minbias
 data. There's a factor of two difference in the means, as well as a much
 longer tail in the data. These differences are SL independent. His MC
 points are consistent with RunI predictions, though. We had some
 discussion as to possible causes which I'll skip here.

 - Marco seems to have figured out how to combine the different pieces of
 mixing events. It is amazing that this was never done in CDF since
 ~1996. Was working on building an exe. Just now we got a message that he
 has merged jet20 with 5 mbs events. These need checking, and Richard
 will look at the COT part, while Marco will test the Si.

 - Y2K started breaking down JDL's trigger table into its physics
 drivers. She has to incorporate the calibration triggers, and add the
 various remarks, but this is what we want. Mel promised to look at it
 and send his comments today. I think that we should build around this
 approach, i.e. add a short paragraph before it as an introduction etc.

 - I showed plots made by Chris Hays of number of obscured hits for all
 SL's with ttbar+0, 5, 10 15 MBS events. Scary. Time was short. Will get
 back to it next time.

 - Y2K showed worse case scenario of Z->bbbar mass resolution. Nice and
 quick work. She wants to see the sensitivity to cone size (0.7->0.4).
 She'll dig the kind of mass resolution people were assuming in our
 various propaganda Higgs reach plots.

 - Patrizia's back from Tuscany and is re-rerunning the Si track finding
 eff. We need to get some computing resources (MC farm) to do the MC
 generation/simulation for her to be able to turn these into B-tagging
 numbers. She's contacted Pasha & Frank. We'll see.

 We agreed to meet tomorrow, 0900, Trailer 171.

 Avi.