1. Status report of Pt Mz measurement
Martin von der Mey
UCLA

2. Cuts(tight central electron)
Tight electron:
ET > 20 GeV
PT > 10 GeV
Iso < 0.1
Ehad/Em < Em
E/p < 2.0
Lshr < 0.2
QDz ,1.5cm
|Dz| < 3.0cm
x2Strip < 10
|z0| < 60.0 cm
# Stereo SL > 2 with 6 hits
# Axial SL > 2 with 6 hits
fidEle 1 (fiducial in CEM)

3. Cuts(loose central electron)
Loose cuts:
ET > 20 GeV
Had/Em < Em
Iso < 0.1
pT > 10 GeV
|z0| < 60.0 cm
# Stereo SL > 2 with 6 hits
# Axial SL > 2 with 6 hits
fidEle 1 (fiducial in CEM)

4. Selection ETF good run list tight electron + central loose electron
tight electron + plug loose electron
Lumi L = pb-1

5. Angle between electrons

6. Cos(q*) =

7. MZ h

8. MZ momentum

9. Z Mass

10. Z transverse momentum

11. Results Selected data events: total: 13609 +- 117 c-c : 5172 +- 72
c-p :
Cross section:
total: pb
c-c : pb ( pb)
c-p : pb ( pb)