Difference between revisions of "Inelastic asymmetry correction"
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(New page: * Systematic correction resulting from radiative tail of inelastic ep process under the measured Møller signal * For inelastic ep’s (<=0.5% of signal), the PV asymmetry is significantly...) |
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* For inelastic ep’s (<=0.5% of signal), the PV asymmetry is significantly (~20×) larger than for Møller and ~12× larger than for elastics – but is not well known. | * For inelastic ep’s (<=0.5% of signal), the PV asymmetry is significantly (~20×) larger than for Møller and ~12× larger than for elastics – but is not well known. | ||
* The idea is to measure the inelastic asymmetry in a radial region where it dominates, and use simulation to scale this measurement to the region of Møller signal contamination (using Q2-weighted W2 to characterize the scaling) | * The idea is to measure the inelastic asymmetry in a radial region where it dominates, and use simulation to scale this measurement to the region of Møller signal contamination (using Q2-weighted W2 to characterize the scaling) | ||
| + | [br] | ||
| + | * Radial detector segmentations between Moller and ep peak rings must be carefully chosen to give an elastic ep event rate no greater than 10 times that of inelastic event rate -- This is crucial so that the asymmetry measured is dominated by inelastics. | ||
Revision as of 10:58, 14 September 2012
- Systematic correction resulting from radiative tail of inelastic ep process under the measured Møller signal
- For inelastic ep’s (<=0.5% of signal), the PV asymmetry is significantly (~20×) larger than for Møller and ~12× larger than for elastics – but is not well known.
- The idea is to measure the inelastic asymmetry in a radial region where it dominates, and use simulation to scale this measurement to the region of Møller signal contamination (using Q2-weighted W2 to characterize the scaling)
[br]
- Radial detector segmentations between Moller and ep peak rings must be carefully chosen to give an elastic ep event rate no greater than 10 times that of inelastic event rate -- This is crucial so that the asymmetry measured is dominated by inelastics.
