Dynamics of the $τ$ Decay

Publisher Website

30 January 1978

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

Vol. 40 (5) , 286-289
https://doi.org/10.1103/physrevlett.40.286

Abstract

We present additional evidence against the vector-meson hypothesis obtained from the

μ - e

events accumulated at SPEAR. Assuming that

τ

is a heavy lepton, we show that the data satisfy predicted scaling in the

z

variable and determine the "Michel parameter" for the

τ

decay to be

0.32 < ρ <~ 1

.

Keywords

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