--SRC Index

Current list (September 9th, 2010)


Here's where I finally show my hand and make a big list of everything I put in the systematic error bar of the ratios and bring wrath/indignation/punishment upon myself. Just remember: I have a terrible head cold.

I took my guidance from the EMC errors. The assumption is that some (but not all) fraction of the same errors cancel. THe errors that are proparaged separately on the cross sections (rather than lumping them all together) are kinematic errors on E, E', and theta; coulomb correction error, and dummy subtraction error (when applicable).

Coulomb Take the maximum of the 2 cross sections.

Kinematic Err Add the three sources for both targets in quadrature (I need to clarify that I don't start with the total error that I have on the cross section).

Dummy Add in quadrature (when applicable).

Target Boiling 0.4% for 3/2, 0.24% for A/2, 0.5% for A/3.

Acceptance 0.7% (down from 1.4% for cross sections)

Detector-related 0.3% for tracking and 0.1% for computer dead time.

Radiative Corrections 0.7% (down from 1.4% for cross sections)

Bin Centering 0.25% (down from 0.5% for cross sections)

Charge 0.3% (down from I think 0.5% for cross sections)

Target Thickness Quadrature sum of applicable ones: 1% for Deut, 1.6% for either Helium, 0.5% for Be and C, 0.7% for Copper, and 1.4% for Gold.

Final Add all in quadrature.