Comparison of GEANT Simulation to Whitney Data

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Rates
Simulation GEANT4(1cm target) GEANT4(1cm target) GEANT4(5cm target) Whitney
Event Cross-Section (nb) .61 .61 0.079
Moller Cross-Section (nb) 0.58 0.58 0.58 0.075
Length of Target (cm) 1 1 5 5
t_{simulated} (s) 1.3E-5 1.3E-4 9.7E-5 9.54E-5
N_{events} 1026940 10270829 1001700
N_{Moller} 975593 9757288 7316407 951138
N_{incident} 4E7 4E8 6E7 6E7


Moller events occur for about 2.5% of the incident electrons on a LH2 target. We can assume that the Moller rate is 95% of the total event rate. We can assume the number of Moller events that occur within the DC range to be around 30% of the total Moller events occuring for the number of incident electrons for LH2 as well. Since the differential cross-section over the angel theta is proportional to the differtial cross-section over wire number we can dividing the Moller differential cross-section by the product of the density and length of the target material