A1n Analysis Meeting
October 18, 2002




    Xiaochao Zheng discussed the status of the final analysis and PRL:
        For the elastic analysis, the left arm yield was 20% smaller than the right.
    To solve the problem, Nilanga optimized delta in the database, and Xiaochao
    added 0.3 mm to the wall thickness in order to get a good W spectrum.

        For the N2 pressure curves, Xiaochao did not use the empty cell
    runs, since they do not fit on the curves.  The pressure read from EPICS does
    not appear to be the real pressure inside the reference cell.

        For the elastic cross section results, the simulation agrees to about 5% with
    the data.  The simulation for the elastic asymmetry agrees with the data to
    within 1 sigma.

        For the DIS cross sections, the results agree with SAMC simulation at
    the 10% level.

        Xiaochao still needs to finalize external radiative corrections and errors for
    the target and beam polarizations.

        Xiaochao presented her draft on the PRL for A1n.  For the A1n plot, the
    collaboration suggested that the data points for the experiment should
    appear more obvious.  The collaboration also suggested that Xiaochao
    should circulate a draft to the collaboration, so they can give her feedback.
    More work is needed for the theory discussion part of the paper
 
 

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