PIBETA Experiment: 1999 Analysis
Progress Report

1. FASTBUS Timing Scale

1.(a) Pibeta Trigger t=0 Point

CsI Prompt Gamma t=0 Point.

1.(b) Pibeta Trigger Timing Scale

CsI Prompt Gamma Timing Scale.

1.(c) pienu Trigger t=0 Point

CsI Prompt Positron t=0 Point.

2. pi->enu Events at 0.80E6 pi+/s

2.(a) pi->enu Energy Spectrum

Background-Subtracted pi->enu Energy Spectrum: Nearest-Neighbor Energy Sum.

2.(b) pi->enu Timing Spectrum

Background-Subtracted pi->enu Timing Spectrum.

3. mu->enunu Events at 0.80E6 pi+/s

3.(a) mu->enunu Energy Spectrum

mu->enunu Energy Spectrum: Nearest-Neighbor Energy Sum.

3.(b) Background-Subtracted mu->enunu Timing Spectrum

Background-Subtracted mu->enunu Timing Spectrum.

4. PiBeta Events at 0.80E6 pi+/s

4.(a) PiBeta Energy and Timing Spectra

pi->pi0enu Events: CsI Energy Spectrum.

pi->pi0enu Events: CsI Timing Spectrum.

pi->pi0enu Events: CsI gamma-gamma Opening Angle.

4.(b) PiBeta Preliminary Decay Rate (1/4 Fall 1999 Data Set)

pi->pi0enu Events: Preliminary BR Normalized to PiStops.

5. pi->enug Events at 0.80E6 pi+/s

5.(a) pi->enug Energy and Timing Spectra

pi->enug Events: CsI Energy Spectrum.

pi->enug Events: CsI Timing Spectrum.

pi->enug Events: CsI e-gamma Opening Angle.

pi->enug Events: Signal vs Accidental Background.

6. mu->enunug Events at 0.80E6 pi+/s

6.(a) mu->enunug Energy and Timing Spectra

mu->enunug Events: Energy vs Timing.

mu->enunug Events: Signal vs Accidental Background.

mu->enunug Events: Background-Subtracted Energy Spectrum.


9 January 2000, E. Frlez, for the PIBETA collaboration