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History: AsymmetryCorrections

Source of version: 3

To extract GEn/GMn, the true "physics" asymmetry must be determined. Since the "raw" asymmetry immediately measured from the data must be corrected for false asymmetry contributions, dilution, and finite acceptance effects.

I recommend that you work through the algebra to understand the correction factors for the asymmetry. Here, I will start with the number of events ~~red:N~~ in the positive (+) and negative (-) helicity state.

-+A{SUB()}raw{SUB} = (N{SUB()}+{SUB} - N{SUB()}-{SUB})/(N{SUB()}+{SUB} + N{SUB()}-{SUB})+-

-+N{SUB()}+{SUB} = sigma{SUB()}+{SUB} L{SUB()}+{SUB} eta{SUB()}+{SUB} + Bck+-
and likewise for -+N{SUB()}-{SUB}+-.

{FORMULA()}b=a^2{FORMULA}
-=False Asymmetries=-

History

Legend: v=view, s=source

Date	User	Ip	Comment	Version	Action
Wed 10 of Jan, 2007 [04:48 UTC]	feuerbac	70.174.118.170	started page describing asymmetry analysis	5 current	v s
Wed 10 of Jan, 2007 [04:26 UTC]	feuerbac	70.174.118.170		4	v s
Wed 10 of Jan, 2007 [04:16 UTC]	feuerbac	70.174.118.170		3	v s
Wed 10 of Jan, 2007 [04:02 UTC]	feuerbac	70.174.118.170		2	v s
Wed 10 of Jan, 2007 [03:57 UTC]	feuerbac	70.174.118.170		1	v s