| Article | |
| Report number | arXiv:1904.03269 |
| Title | Search for Heavy Neutrinos in $\pi \to \mu\nu$ Decay |
| Author(s) |
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.) ; 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) ; Ito, S. (Osaka U. ; Okayama U.) ; Kettell, S.H. (Brookhaven Natl. Lab.) ; Kurchaninov, L. (TRIUMF) ; Littenberg, L.S. (Brookhaven Natl. Lab.) ; 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 | 2019-11-10 |
| Imprint | 2019-04-05 |
| Number of pages | 5 |
| In: | Phys. Lett. B 798 (2019) 134980 |
| DOI | 10.1016/j.physletb.2019.134980 (publication) |
| Subject category | hep-ex ; Particle Physics - Experiment |
| Accelerator/Facility, Experiment | TRIUMF 1072 |
| Abstract | Heavy neutrinos were sought in pion decays $\pi^+ \rightarrow \mu^+ \nu$ by examining the observed muon energy spectrum for extra peaks in addition to the expected peak for a massless neutrino. No evidence for heavy neutrinos was observed. Upper limits were set on the neutrino mixing matrix $|U_{\mu i}|^2$ in the neutrino mass region of 15.7--33.8 MeV/c$^2$, improving on previous results by an order of magnitude. |
| Copyright/License | preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2019-2024 Authors (License: CC-BY-4.0) |
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Zapis kreiran 2019-04-11, zadnja izmjena 2022-08-10
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