2 analysis items

[Tom Banks <tbanks@socrates.berkeley.edu>]

1. Concerning our eDetector autocorrelation discussion Thursday night: I
finally had a chance to look at my combined ePC1/ePC2/eSC autocorrelation
histograms from both the unskimmed and skimmed analyses, and I don't see
an order-of-magnitude improvement in the skimmed data background level
after all.  The signal/background ratio for the unskimmed data is ~
9.6e9/1.25e5 = 7.6e4, while the skimmed data gives 2.8e9/2.5e4 = 1.1e5.
So things are basically the same as they appeared in my original
presentation,

  http://weak0.physics.berkeley.edu/weakint/research/muons/private/tbanks_dir/TeleConf/2005Feb22/2005Feb22.html

except that the length and depth of the skimmed eDet deadtime "hole"
improved, because I reduced that ePC deadtimes after our discussions at
the May analysis meeting (but maybe that's what's important?).  You guys
mentioned that Steve saw a smaller signal/BG ratio in his (non-skimmed)
eDet autocorrelation plots... are those posted anywhere?  Were we using a
correct reference value during our late-night parley?


2. Steve: I noticed that in your May 2005, post-analysis meeting "MIAS
to-do list",

  http://www.npl.uiuc.edu/exp/mucapture/coll/mucap/smclayto/CollMeeting_May2005/mias_todo_list.html

you have "Lifetime spectra for 'bad stops'".  Did you ever create those?
I neglected to do so in my analysis--I just computed the "lost" muon
fraction--and it may be some time before I get the chance to do so again
in an unskimmed analysis.  If you already have them, they would be
extremely helpful for me to use in my Fast MC simulation.

Thanks,
Tom