Measurement of Event Kinematics

The measurement of the event kinematics is performed with the Jacquet-Blondel variables (see (2.24)), but instead of summing over particles, the sums are calculated from the energy deposits in the calorimeter and the angle of the center of the calorimeter cells with respect to the measured vertex, i.e.:

$$=$$ (29)

$${y_{\mbox{\em jb}}} =$$ (30)

$$=$$ (31)

$$=$$ (32)

$$=$$ (33)

Note that for CC interactions the energy in all cells stems by definition from the hadronic final state.