Next: The extraction of the
Up: A measurement of the
Previous: Introduction
The measurement of the structure function is equivalent to
the measurement of the differential cross section
.
Therefore,
we need to unfold
the measured distribution to get the (``true'') number of the
events in the selected bins.
Known the , the likelihood
that effect (an observed event reconstructed in the bin )
is due to cause , and ,
the measured number of events in the bin ,
the unfolded number of events due to the is
given by:

(1) 
where
is the
efficiency of detecting an event generated by .
The elements are calculated by the Bayes' theorem:

(2) 
Giulio D'Agostini
20040505