binc

Bin centering 05/14/06

Bin centering was performed, and the bin centered events are shown by the green histograms in the links below. These events were generated with a point Monte Carlo.

Only the lowest Q2 L-T separation point was analyzed, and the interference terms were turned off in the Monte Carlo (but not in the data).

Hydrogen
high epsilon
low epsilon

Carbon
high epsilon
low epsilon

The A>1 targets have a wide 't' and hsdelta distribution. This is because the Monte Carlo does not generate hsdelta, but rather the spectral function Em and Pm. The Monte Carlo hsdelta is then constrained by Em and Pm, and so was not limited to a point. This is somewhat of a probelem, because the A>1 six-fold differential cross section has dP_pi in the denominator.

The point Monte Carlo events were used by my kumac to determine the point Monte Carlo cross section. A tight cut was placed on hsdelta whenever A>1, and the appropriate phase space volume was used to determine the cross section.

The bin-centered cross sections are:

Hydrogen
high epsilon   (15.8246 / 14.3672) * 5.48662E-06 ub /sr /MeV /sr
low epsilon     (5.90982 / 5.62823) * 1.4601E-06 ub /sr /MeV /sr

Carbon
high epsilon (8.73772 / 8.95606) * 1.2E-07 ub /MeV /sr /MeV /sr
low epsilon   ( 3.46758 / 3.67074) * 0.53E-07 ub /MeV /sr /MeV /sr

Where the factors in brackets are the ratio of Y_data/ Y_simc over the whole acceptance, and Y_simc was calculated with the lt components in the Monte Carlo turned on.