Collaboration Meeting Presentation and wrap up.

 Attached is the presentation I gave at the collaboration meeting in late March.  It was decided that before releasing a preliminary result, we would have to calculate the BEMC gain calibration uncertainty for 2006.  A group of us at MIT created a plan for estimating this uncertainty (see here) and are currently working on implementing this plan as can be seen in Adam's blog post here:

We hope to have a final estimate of this uncertainty by early next week.  In that case, I can hopefully calculate the uncertainty in the cross section by the spin pwg meeting on 4/23.  If this can be done, I will present the results then and ask to release the preliminary result for DIS 2009.  If we cannot calculate a gain calibration systematic by 4/23, obviously we will not be asking to release the preliminary result.