| Article | |
| Title | Search for heavy neutrinos in \(\pi ^{ + } \to \mu ^{ + }\nu \) decay and status of lepton universality test in the PIENU experiment |
| Author(s) | Ito, S (Osaka U. ; Okayama U.) ; Aguilar-Arevalo, A (Mexico U., ICN) ; Aoki, M (Osaka U.) ; Blecher, M (Virginia Tech.) ; Britton, D I (Glasgow U.) ; vom Bruch, D (British Columbia U. ; Paris U., VI-VII) ; Bryman, D A (British Columbia U. ; TRIUMF) ; Chen, S (Tsinghua U., Beijing, Dept. Eng. Phys.) ; Comfort, J (Arizona State U.) ; Doria, L (TRIUMF ; Mainz U., Inst. Kernphys. ; U. Mainz, PRISMA) ; Cuen-Rochin, S (British Columbia U.) ; Gumplinger, P (TRIUMF) ; Hussein, A (Northern British Columbia U. ; TRIUMF) ; Igarashi, Y (KEK, Tsukuba) ; Kettell, S H (Brookhaven) ; Kurchaninov, L (TRIUMF) ; Littenberg, L S (Brookhaven) ; Malbrunot, C (British Columbia U. ; CERN) ; Mischke, R E (TRIUMF) ; Numao, T (TRIUMF) ; Protopopescu, D (Glasgow U.) ; Sher, A (TRIUMF) ; Sullivan, T (British Columbia U. ; Queen's U., Kingston) ; Vavilov, D (TRIUMF) |
| Publication | 2021 |
| Number of pages | 6 |
| In: | JPS Conf. Proc. 33 (2021) 011131-1-011131-6 |
| In: | J-PARC Symposium 2019, Tsukuba, Japan, 23 - 26 Sep 2019, pp.011131-1-011131-6 |
| DOI | 10.7566/JPSCP.33.011131 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | TRIUMF 1072 |
| Abstract | In the present work of the PIENU experiment, heavy neutrinos were sought in pion decays \(\pi ^{ + } \to \mu ^{ + }\nu \). No evidence for extra peak was found in the muon kinetic energy spectrum and 90% confidence level upper limits were set on the neutrino mixing matrix \(|U_{\mu i}|^{2}\) in the mass range of 15.7 to 33.8 MeV/c^2, improving an order of magnitude over previous experiments. Current status of lepton universality test is also reported. |
| Copyright/License | publication: © 2021-2024 the author(s) (License: CC-BY-4.0) |
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Registre creat el 2022-08-10, darrera modificació el 2022-08-11
