.A text summary of each talk is given below.  The transparencies can be
found at at the jet/met meeting page, under minutes:
Go to http://computing.fnal.gov/cms/jpg/minutes/oct2302/minutes.html
and then click below
<br><a href="./abdullin/" >Salavat's </a>


<plaintext>



   Minutes of the Oct 23, 2002 Jet/Met meeting
   -------------------------------------------


Attendence: Salavat Abdullin, Sasha Nikitenko, Pam Chumney, Shuichi Kunori, 
Chris Tully, Jim Rohlf, Daniel Elvira, Jordan Damgov, Sarah Eno, Giacomo
Bruno, Kajari Mazumdar



                   Agenda
                   ------
    Update on Stuff - Salavat


Salavat presented an update on 3 topics: the low lum SUSY trigger table, the 
occupancy in the hadron calorimeters, and the efficacy of a delta_phi
cut for reducing QCD background.


For the low luminosity trigger table.  We were requested to make
a simplified trigger table for SUSY at low luminosity.  Also, we
were told that we could have a larger bandwidth to tape.  Working
with Shuichi, Salavat and Shuichi found the following very simple
table that has good efficiency
  Level 1:  3 jets over 70 GeV or 1 jet > 60 and MET>65. 
This has a rate of 0.71 kHz and efficiencies of 88,87,77,90,89, and 80 %
for SUSY pints 4,5,6,4R,5R, and 6R respectively.

For the HLT trigger table, he found
  HLT: 4 jets > 70 or 1 jet > 150 and MET>93
gave a rate of 11 Hz and efficiencyes of 68, 68, 44, 48, 42, and 28%.
Salavat's old HLT trigger gave a rate of 3 Hz with efficiencies of
78, 74, 54, 38, 27, and 17 %.  So, the larger rate to tape clearly helps the
R parity violating points.  However, we can probably gain on the
R-parity conserving points by adding more triggers/ further optimization.

Salavat also shows results on hadron calorimeter occupancies.  The 
occupanices have now been estimated in the very large towers 
near the high eta end of the HE and in the HF.  Theses towers, as one
would expect, contain proportionally more ET from pileup than the more central
smaller towers.  He showed that, as one would expect in this case,
that if the cut in on ET*(size of central tower/ size of tower) the 
occupancy is almost constant.  This does, however, mean you need a cut
of 0.5 GeV in the central gives the same occupancy as a cut of 1.7 GeV
in the HF.  We need to see how this affects jet and MET resolutions.

Salavat also showed some new plots on making a cut on delta phi
between the two leading jets to help reduce backgrounds to the MET
trigger from QCD.  This cut is only effective for very high
values of MET, basically when the contribution from the low
pt hat bins becomes neglible.  This is around 130 GeV at low lum
and 150 GeV at high lum.  At high luminosity, the distribution doesn't
really look useful at all.