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Status of the TRIUMF PIENU Experiment
S. Ito, A. Aguilar-Arevalo, M. Aoki +21
The PIENU experiment at TRIUMF aims to measure the pion decay branching ratio with precision % to provide a sens…
Precision Electron-Beam Polarimetry using Compton Scattering at 1 GeV
A. Narayan, D. Jones, J. C. Cornejo +33
We report on the highest precision yet achieved in the measurement of the polarization of a low energy, (1 GeV), electron beam, accomplished using a new polarimeter ba…
Improved measurement of the $π\rightarrow \mbox{e} ν$ branching ratio
A. Aguilar-Arevalo, M. Aoki, M. Blecher +23
A new measurement of the branching ratio, $R_{e/μ} =Γ(π^+ \rightarrow \mbox{e}^+ ν+ π^+ \rightarrow \mbox{e}^+ νγ)/ Γ(π^+ \rightarrow μ^+ ν+ π^+ \rightarrow μ^+ νγ)$, resulted in $…
Detector for measuring the branching fraction
A. A. Aguilar-Arevalo, M. Aoki, M. Blecher +24
The PIENU experiment at TRIUMF is aimed at a measurement of the branching ratio = ${Γ\big((π^{+} \rightarrow e^{+} ν_{e}) + (π^{+} \rightarrow e^{+} ν_{e}γ)\big)}/{Γ\big(…