After checking the dilution factor as Oscar recommended, I found I was using different dilution factors for x and W plots. Also I was using the Q2 bin's average kinematics to calculate the dilution, instead of doing it for each x or W bin. Now the dilution is calculated properly. For comparison see this comparison to Narbe's dilution factors
The updated plots are listed below. Note: A 5 percent background asymmetry was added to see what effects this has on the asymmetries.
The inclusive neutral pion cross section and asymmetry from the MAID model exclusive electro production cross section is shown for the two target configurations for 5.9 GeV beam with theta_pi=36 degrees.
Parallel Target (180)
Perpendicular Target (80)
Of course these pions come at many angles and decay into photons. The opening angle is uniform in the center of mass but with the boost to the lab frame, we find naturally we are interested in pions produced in the direction of the detectors.
To handle the decay, the lorentz invariant phase space is sampled many times for each point on the cross section graph.
If a photon is above some angle and eenergy, it is counted as a photon and the probability is calculated from sampling many times.
These crude results are shown in the graphs:
Parallel Target
Perpendicular Target
Since the main trigger for SANE included the Cherenkov, the photons are essentially ignored. However, due to extra material infront of the cherenkov, mainly the tracker, pairs produced there can be selected by the cherenkov's second ADC peak.
First we have the ratios of double to single peaks shown here:
Parallel Target
Perpendicular Target
Selecting just the double peak and looking at the asymmetry vs energy:
Parallel Target
Perpendicular Target
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