[Clas_cascades] Notes phone conference 10/07/09

[Elton Smith]

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

== Announcements==
Lewis will be at JLab next week for shifts Mon-Thu.

== Normalization studies (Lewis) ==

#
[http://clasweb.jlab.org/rungroups/eg3/wiki/images/9/96/Usc_ana_note_eg3.v1.01.pdf
Current Updated Normalization Paper for Delta(1232)- Lewis Graham -
9-30-09]
# Sent out latest update last week. No other comments yet
#* Comment: Add new plot with log scale to cross section with 4.5 factor
(duplicate of Fig. 19).
#* Comment: Revise titles in Table 3.
#* Comment: Kijun was concerned about the wording of how the 100 MeV was
picked for eg3. Also smaller comments will be passed offline.
# Table 3, 4.7 factor
#* Found problem in cross section script. Correct value is 5.3-5.4,
consistent with change from 20-30% down to 1-2%.
#* Discussion regarding possible origin of difference in untriggered
region factor. Hovanes: This must be due to differences in coincidence
gates, which might be dependent of the number of tracks which contribute
to the coincidence. At the moment this factor appears to be depend on the
exclusivity of the reaction, but it is not quite understood why. Ralf
hopes that refinement of the analysis might show that background
contributions are affecting the extracted value.
# Zhiwen: Noted that his Lambda(1520) channel does not have sufficient
statistics to obtain an accurate value.
# For the Phi--, which is might not be precisely reproduced by either
reaction, use the conservative value of 13%, exclusive 3rd row in Table 3


== Next Meeting, Wed Oct 14 ==
# Feedback on normalization note to Lewis
# Hovanes to update Phi-- note to eliminate poorly performing T-counters


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