SELECTION CRITERIA

The following requirements are applied to the events:

At this stage a 5C fit is performed; the mass of the two-jet system must match the Z0 mass (the experimental Z0 mass distribution is taken into account).

The following cuts are then applied:

  1. Probability of the 5C fit > 1E-22
  2. Minimum electron isolation angle (w.r.t. jets) > 4
  3. Maximum electron isolation angle (w.r.t. jets)> 15
  4. Fast electron energy > 40 GeV
  5. Fitted recoil mass > 50 GeV
  6. B-tagging ( min(probs,probp) < 0.3 )