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The size of
has to be compared to the achieved statistical accuracies
in order to decide if a correction of the asymmetries for dead-time is necessary.
First of all the effect is only an issue for positive target polarization. For
coincidence events in Gen98 we have the following situation:
- Neutron:
- Without applying any cuts we have roughly
neutrons
for the positive target polarization. Therefore in the best case we can achieve
a statistical error of
which is
40 times larger than
Applying the final cuts the number of
neutrons is reduced to
and the statistical error is
and thus at least two orders of magnitudes larger than
- Proton:
- For the proton the numbers are
(no cuts) and
(final cuts) leading to statistical errors of
(no cuts) and
(final cuts). This is still 20 times larger
than the size of
Marko Zeier
2000-05-04