Minutes of the 2006/07/05 analysis meeting

From: Michael Kohl (kohlm@mit.edu)
Date: Wed Jul 05 2006 - 16:14:13 EDT


Hi,

below are the minutes of today's analysis meeting.

Minutes

-hPz for deuterium from d(e,e'p) (Adam)
  +See ppt.
  +Comparison of hPz from Arenhoevel-MC and hPz from super ratio
   method. Super ratio method gives on the order of 5% smaller
   hPz.
  +Still, a Q2 dependence is seen. Q2Bin-tobin fluctuation seems to
   become larger when accounting for the spin angle map in the super
   ratio method (for each Q2bin, the yield-weighted average spin angle
   is used). Not understood, exclude possible mistakes
  +Should look at yields when asymmetries don't look plausible
  +Discussion: Q2 dependence of hPz, even after accounting for spin
   angle map, may be due to a spin angle profile along the target-z
   coordinate. Therefore, hPz should be extracted as a function of z,
   for each Q2bin.

-Deuteron photodisintegration (Tim)
  +Progress report, see pdf.
  +Deuteron photodisintegration: target-only asymmetries T20,T21,T22:
   T21 crosses zero near 90 degree cm angle, only T20 and T22
   are significant.
  +T20 and T22 extraction. Comparison with Arenhoevel and data from
   Russia
  +MC required to study distribution of cm angles
  +Pzz needs to be updated,

-Pion electroproduction from deuterium (Aki)
  +See ppt
  +Event selection, yields, asymmetries, comparison with hydrogen data
  +Yields versus W for d(e,e'piplus)nn,d(e,e'p)pinulln,d(e,e'piminus)pp
  +Tensor asymmetries (near threshold, these should show prominent
   structure due to the isospin triplet state, this depends on
   resolution)
  +Need to compare to Pandharipande

-AOB
  +Collaboration meeting next week on Friday, July 14, 2006. All
   analysis reviews will be on that same day, there is no additional
   pre-meeting.
  +Agenda will come up soon
  +Sasha to arrive on Monday

Best regards,

    Michael

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