A1n Analysis Meeting





    Xiaochao Zheng discussed the status of the final analysis:
        For the final analysis, the data replay and elastic asymmetry work has
    been completed, but some work remains for the elastic cross section, and
    N2 dilution.

        For the final analysis, Xiaochao is using new acceptance cuts.  For the deadtime
    correction, Xiaochao gave an overview of her work.  She also looked at the PID
    efficiency.  With the new analysis, the largest change for the raw asymmetries
    is the parallel asymmetry for the x = 0.33 kinematics ( ~ 1 sigma).   The DT correction,
    acceptance cuts, and database/ntuples each accounts for about a third of the change.

        For the elastic analysis, Xiaochao needs to check the asymmetry more thoroughly.
    The simulation is about 2 sigma away from the data.  There is also a 20% difference
    between the raw data and elastic cross section simulation for the left arm.   The right
    arm elastic cross section data agrees with the simulation.

        For the pressure curves, the R-arm 3He pressure curve is off, but the L-arm
    is good.  The N2 pressure curve looks good for both arms.

        Xiaochao's plans to work on radiative corrections, MC for DIS, and cross
    section, g1 and g2 analysis.
 

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