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27 April 2024

» arxiv » hep-ex/9912062

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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 ; J. Brau ; D. Buchholz ; H. Budd ; L. Bugel ; S. Case ; J. M. Conrad ; R. B. Drucker ; B. T. Fleming ; R. Frey ; J. Goldman ; M. Goncharov ; D. A. Harris ; R. A. Johnson ; J. H. Kim ; S. Koutsoliotas ; M. J. Lamm ; W. Marsh ; D. Mason ; K. S. McFarland ; C. McNulty ; D. Naples ; P. Nienaber ; A. Romosan ; W. K. Sakumoto ; H. M. Schellman ; M. H. Shaevitz ; P. Spentzouris ; E. G. Stern ; M. Vakili ; A. Vaitaitis ; V. Wu ; U. K. Yang ; J. Yu ; G .P. Zeller ;
Date:	24 Dec 1999
Journal:	Phys.Rev.Lett. 84 (2000) 4043-4046
Subject:	hep-ex
Abstract:	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.
Source:	arXiv, hep-ex/9912062
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