The PIENU experiment: a precision measurement of the (π-> e ν) / (π-> μν) branching ratio
arXiv:1006.0695
Abstract
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.
arXiv comment4 pages, 2 figures, Lake Louise Winter Institute proceedings (2010)