The PIENU experiment: a precision measurement of the (π-> e ν) / (π-> μν) branching ratio
L. Doria · arXiv (Cornell University) · 2010
The PIENU experiment aims at the measurement of the branching ratio R = Γ(π-> e ν+ π-> e νγ) / Γ(π-> μν+ π-> μνγ) 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.