Final E158 Results Run I-III
Here is the summary of the Run I-III results. All results are
final, as contained in the hep-ex/0504049,
submitted to PRL (April 26, 2005).
Physics asymmetry:
Run I-III: APV =
-0.131
± 0.014 (stat.)
± 0.010 (syst.)
(Significance 8.3σ)
Weak mixing angle at Q2=0.026 GeV2
Theory prediction:
sin2θWeff =
0.2381
± 0.0006 (theory)
Run I-III:
sin2θWeff =
0.2397
± 0.0010 (stat.)
± 0.0008 (syst.)
(Standard Model pull +1.1σ)
Significance of running between Q2=MZ2
and Q2=0.026 GeV2:
6.2σ
Weak mixing angle at MZ
World average (PDG2004):
sin2θW(MZ) =
0.23120
± 0.00015
Run I-III:
sin2θW(MZ) =
0.2330
± 0.0011 (stat.)
± 0.0009 (syst.)
± 0.0006 (theory)
Limits on New Physics (95% CL):
Contact interactions
Λ-LL≥
16 TeV,
Λ+LL≥
7 TeV
Z' mass
m(Z')≥1.0 TeV
Plots
- Asymmetry vs HWP/Energy state (LEP-style plots):
Run I-III (EPS,GIF,PDF)
- Asymmetry APV vs slug (sign-corrected):
Run I-III (EPS,GIF,PDF)
- Measured asymmetry Aphys vs slug, with sign modulation
(E122 style):
Run I-III (EPS,GIF,PDF)
- Mixing angle at Z pole from low energy experiments
Run I-III (EPS,GIF,PDF)
- Running of the weak mixing angle (Run I-III data)
(EPS,GIF,PDF)
Yury Kolomensky
