The PIENU experiment: a precision measurement of the (\pi -> e \nu) / (\pi -> \mu \nu) branching ratio
Luca Doria (on behalf of the PIENU collaboration)

TL;DR
The PIENU experiment measures the ratio of pion decay modes with high precision to search for new physics at energy scales around 1000 TeV/c².
Contribution
It provides a highly precise measurement of the pion decay branching ratio to test the Standard Model and probe new pseudoscalar interactions.
Findings
Achieved <0.1% measurement precision
Set constraints on new pseudoscalar interactions
Enhanced sensitivity to physics beyond the Standard Model
Abstract
The PIENU experiment aims at the measurement of the branching ratio R = \Gamma (\pi -> e \nu + \pi -> e \nu \gamma) / \Gamma (\pi -> \mu \nu + \pi -> \mu \nu \gamma) at the <0.1% precision level, with which mass scales of 1000 TeV/c^{2} can be searched for new pseudoscalar interactions. The status of the experiment is described.
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Taxonomy
TopicsAdvanced Data Storage Technologies · Particle physics theoretical and experimental studies · Distributed and Parallel Computing Systems
