The conserved-vector-current hypothesis, together with measured nuclear beta-decay rates,
predicts a value of the rate for the decay π+→ π 0 e+ ν of 0.4027±0.0018 s− 1. Using a …

Using the current value for the pion lifetime, we have recomputed the branching ratio for π→
e ν decay obtained from the 1963 experiment of Di Capua et al. and find Γ (π→ e ν+ π→ e ν …

The branching ratio for pion beta decay, R=(π+→ π 0+ e++ ν)(π+→ μ++ ν), was measured.
Arrays of lead sheets, scintillators, and spark chambers were used to measure the angular …

The rate of the decay π+→ π o+ e++ ν (ref.[1]), the beta decay of the π+, has been measured
by means of a counter scheme, in which this process is detected with an efficiency of …

The lifetime of the neutral pion (π0) has been directly measured. The lifetime has been
found to be τπ0=(0.897±0.022±0.017)× 10− 16 s. The systematic error results from …

7j 0+ e++„x~ hereas various model calcula-tions'~'lead to branching ratios for this process of
the order of magnitude 10~, the conserved vector current (CVC) hypothesis'~'allows a …

It is known experimentally that, relative to the normal pion decay mode π→ μ+ ν, the
branching ratios ρ and ρ γ for the alternate decay modes π→ e+ ν and π→ e+ ν+ γ are very …

The branching ratio for the decay π→ e ν γ has been measured in a counter experiment in
which the e+ was detected in a magnetic spectrometer and the γ ray in a lead-glass …

The experiment described here compares the lifetimes of π+ and π− by measuring the
fraction of surviving pions at several positions along a 1000-cm (one-half lifetime) decay …

The most general amplitude for the radiative pion decay π→ e ν γ including terms beyond
V− A theory is considered. The experimental constraints on the decay amplitude …