[G12] Minutes from 1/20/09 meeting

[Craig Bookwalter]

Hi g12,
  Minutes from today's meeting can be found at:

http://clasweb.jlab.org/rungroups/g12/wiki/index.php/20Jan10

and pasted below:

Agenda
    * Diane's plots for Jan 20th
          o plots of t distribution with a0 and a2 cuts
          o MC distributions
    * update on ST efficiency studies
    * creation of a directory on clasg12 work disk for data samples useful
to everyone, say /work/clas/clasg12/skims
    * initial gflux output from special norm runs
/work/clas/clasg12/dschott/run*/gflux*.root
    * Update from Mike on his analysis

Minutes

    * Attending: Diane, Carlos, Will, Dennis, Craig, Ben, John Price,
Sasha O, Mike
    * Dennis is developing a skim for Will and Carlos's analysis (pk+ OR
pk- OR k+k-) and using a combination of dropping banks, timing and
beam energy cuts he can reduce a file down to 2% of its original
size--this skim will take up 2 TB.
    * Mike reports on a fit he did to the rho in p pi+pi- to check his fit
in e+e-. The rho width is good but the mass is 20 MeV low. Dennis
suggests a beam energy cut to weed out s-channel stuff. Craig will
skim more p pi+pi- events for general usage.
    * Diane reports that gflux is operational under the new build
system--a secret option was required. She's done the last five
normalization runs and Sasha O. has done the first two so Diane is
going to compare between them.
    * Diane shows plots of the t-slope of her events in the a0 and a2
region. Her slope looks low for the a2 and high for the a0, according
to Dennis. She will run another set of MC with the generated t-slope
set to 3 to see how it comes out.
    * Craig shows his results for the correct version of his ST efficiency
study. Dennis would like to see the results paddle by paddle--this is
possible using the TDPL bank. Mukesh says the ST occupancy plot looks
significantly different in paddles 1-4 than plots he has looked at, so
Craig will direct him to the same data so he can make the same plots
with his code and compare.
    * Dennis reports that Johann told him that the majority of the failing
runs were Duke runs...