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Search for a 33.9 MeV/c^2 Neutral Particle in Pion Decay
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Search for a 33.9 MeV/c^2 Neutral Particle in Pion Decay

J. A Formaggio, E. D Zimmerman, T Adams, A Alton, S Avvakumov, L de Barbaro, P de Barbaro, R. H Bernstein, A Bodek, T Bolton, …
24 Dec 1999
url
https://doi.org/10.48550/arxiv.hep-ex/9912062View
Preprint (Author's original)arXiv.org - Non-exclusive license to distribute Open

Abstract

Physics - High Energy Physics - Experiment
Phys.Rev.Lett.84:4043-4046,2000 The E815 (NuTeV) neutrino experiment has performed a search for a 33.9 MeV/c^2 weakly-interacting neutral particle produced in pion decay. Such a particle may be responsible for an anomaly in the timing distribution of neutrino interactions in the KARMEN experiment. E815 has searched for this particle's decays in an instrumented decay region; no evidence for this particle was found. The search is sensitive to pion branching ratios as low as 10^-13.

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