The Lifetimes of the $π^{+}$ and $π^{-}$ Mesons

15 October 1952

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 88 (2) , 179-183
https://doi.org/10.1103/physrev.88.179

Abstract

The mean lives of the

π^{+}

and

π^{-}

mesons are determined by measurements of the attenuation in flight of a 73-Mev meson beam, using a scintillation counter telescope of variable length. The decay scheme,

π^{\pm} \to μ^{\pm} + ν

, is assumed to be isotropic in the rest system of the

π

-meson. The data, when the Lorentz time dilation is taken into account, give for the mean lives at rest

{τ_{-} = (2.55 \pm 0.19) \times 10^{- 8} sec,} {τ_{+} = (2.44 \pm 0.18) \times 10^{- 8} sec .}

Keywords

This publication has 11 references indexed in Scilit:

Measurement of the Positiveπ-Meson Lifetime
Physical Review B, 1951
Cross Section for the Reactionπ++d→p+p, and the Spin of theπ+Meson
Physical Review B, 1951
The Spin of the Pion via the Reaction $π^{+} + d ⇋ p + p$
Physical Review B, 1951
On the Lifetime of the Negative Pi-Meson
Physical Review B, 1951
Total Cross Sections of $π$ -Mesons on Protons and Several Other Nuclei
Physical Review B, 1951
Detection of Positive $π$ -Mesons by $π^{+}$ Decay
Physical Review B, 1951
Disintegration of Nuclei by $π^{-}$ -Mesons
Physical Review B, 1950
The Lifetime of the Positive $π$ -Meson
Physical Review B, 1950
The Lifetime of the Heavy Meson
Physical Review B, 1948
On the stopping of fast particles and on the creation of positive electrons
Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1934

The Lifetimes of theπ+andπ−Mesons

Abstract

Keywords

The Lifetimes of the $π^{+}$ and $π^{-}$ Mesons