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We've written up a Gottfried-Jackson boost and ran all the data (minus a few faulty disks) as well as 1.5 M Monte Carlo events through the analysis code.
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Because the four-vector of the recoil particle is used in the Gottfried-Jackson boost, we needed to ensure that the reconstructed recoil particle was reasonably close to the theoretical expectation.
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Accordingly, we plotted the dot product of the reconstructed recoil direction with beam-forward. This is shown below. In the data we cut on this below .9.
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We studied acceptance as a function of invariant mass, t, cos(theta), and phi in the GJ frame. The acceptances, uncorrected distributions, and corrected distributions are shown in the links below.
