Looking for new Physics with Pion Decays
L. Doria*
on behalf of the PIENU Collaboration*: corresponding author
Published on:
December 22, 2017
Abstract
The PIENU experiment at TRIUMF is conceived for measuring the
$R = \Gamma(\pi^+\rightarrow e^+\nu + \pi^+\rightarrow e^+\nu\gamma)/
\Gamma(\pi^+\rightarrow \mu^+\nu + \pi^+\rightarrow \mu^+\nu\gamma)$
branching ratio at the <0.1\% precision level,
providing a stringent test of the electron-muon universality hypothesis.
The violation of universality can point towards the existence of new physics.
DOI: https://doi.org/10.22323/1.302.0012
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