6533b820fe1ef96bd127a8c7

RESEARCH PRODUCT

Search for heavy neutrinos in → Decay

A. Aguilar-arevaloM. AokiM. BlecherD.i. BrittonD. Vom BruchD.a. BrymanS. ChenJ. ComfortL. DoriaS. Cuen-rochinP. GumplingerA. HusseinY. IgarashiS. ItoS.h. KettellL. KurchaninovL.s. LittenbergC. MalbrunotR.e. MischkeT. NumaoD. ProtopopescuA. SherT. SullivanD. Vavilov

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In the present work of the PIENU experiment, heavy neutrinos were sought in pion decays π+→μ+ν at rest by examining the observed muon energy spectrum for extra peaks in addition to the expected peak for a light neutrino. No evidence for heavy neutrinos was observed. Upper limits were set on the neutrino mixing matrix |Uμi|2 in the neutrino mass region of 15.7–33.8 MeV/c$^{2}$, improving on previous results by an order of magnitude.

yearjournalcountryeditionlanguage
2019-09-27Physics Letters
10.1016/j.physletb.2019.134980http://repo.scoap3.org/api