Abstract
The PIENU experiment aims to measure the branching ratio of the charged pion decay with precision of < 0.1 %. This measurement is much sensitive to search for massive neutrinos coupled to electrons in π+→ e+νe decay. The initial analysis was completed and the upper limit on the neutrino mixing parameter |Uei|2 in the neutrino mass range of 0 to 55 MeV/c2 was improved by a factor of 1.5, and the sensitivity for the mass range of 68 to 129 MeV/c2 was improve by a factor of up to 4.
Original language | English |
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Article number | 1 |
Journal | Hyperfine Interactions |
Volume | 238 |
Issue number | 1 |
DOIs | |
Publication status | Published - Nov 1 2017 |
Keywords
- Neutrino mixing
- Pion decay
- Precision measurement
- Weak interaction
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics
- Condensed Matter Physics
- Physical and Theoretical Chemistry