[Clas_cascades] Notes July 9

[Elton Smith]

Present: Elton, Stepan, Hovanes, Kijun
On the phone: Ralf, Lewis, Zhiwen <br>
Notes by Elton.

== Announcements==
# Back to original schedule. Our next meeting will be Thursday  July 16 at
9:00 am.

== Normalization ==
# We checked the table in the normalization note and normalization
uncertainty ranges from 10% (factor 5.3) to 15% (factor 6.4). We should
take 15% for the Phi-- note.

== Comments on PHi-- Note ==
# One issue remaining, which is the (ST) trigger acceptance for particles
decaying outside the start counter.
# Hovanes compared MC and data for cuts on lambda and cascade vertices
outside the region of the start counter.
# It was unclear that this comparison gives us the estimate we are
interested in.
# The suggestion is to use the MC data only and check with and without
start counter conditions for Bit 5 and Bit 6. The loss of MC data that do
not satisfy the trigger conditions should be an estimate of the correction
due to decays outside start counter.
# Other conditions in the trigger besides the start counter are included
in the analysis conditions, so need not be studied separately.
# The trigger corrections seem to agree with Bit 5 results, so this might
be a limit on the size of this effect.
# Zhiwen: Hovanes may already have done a similar study, but we could not
quickly find it on the wiki. Hovanes will check in case the work has
already been done.
# Hovanes will update the note and send a notice to the listserver so that
we can give feedback.
# Once submitted the response to the analysis note, we can work on the
paper draft to make it available to the committee.

== Next Meeting July 16, 9:00 am ==
# Complete response to Phi-- committee


Elton Smith
Jefferson Lab MS 12H5
12000 Jefferson Ave
Suite # 16
Newport News, VA 23606
elton at jlab.org
(757) 269-7625
(757) 269-6331 fax