Difference between revisions of "Observables"
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Which means there is a direct relationship to first component analyzing power<br> | Which means there is a direct relationship to first component analyzing power<br> | ||
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which is very much accessible with e+D->e+N+X <br> | which is very much accessible with e+D->e+N+X <br> | ||
Revision as of 10:56, 25 April 2013
A couple of words about Axx and how to measure it:
Axx is an asymmetry so take advantage of numerator denominator systematics cancellation:
1.) Measure Np and Nu with same cup same exact material
2.) Use same B-field
3.) Use NMR on both to measure polarization and un-polarization
4.) Let beam heating an off larmor microwave control un-polarization
5.) Keep both cold (~1K)
6.) Switch from pol to unpol frequently
For unpolarized electron beam:
Which means there is a direct relationship to first component analyzing power
which is very much accessible with e+D->e+N+X
In addition we have a direct relationship to b1 for low x but be weary uncertainties
