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Search for a Short-Lived Neutral Particle Produced in Nuclear Decay

Savage, M. J. and McKeown, R. D. and Filippone, B. W. and Mitchell, L. W. (1986) Search for a Short-Lived Neutral Particle Produced in Nuclear Decay. Physical Review Letters, 57 (2). pp. 178-181. ISSN 0031-9007. doi:10.1103/PhysRevLett.57.178.

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We report on a search for a short-lived neutral particle φ produced in the decay of the 9.17-MeV Jπ=2+ state in 14N. The experiment is sensitive to decays into an e+e- pair with τφ≲10^-11 s. For mφ=1.7 MeV we place a limit on the branching ratio of Γφ/Γγ<~4×10^-4 at the 90% confidence level.

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Filippone, B. W.0000-0002-2618-2688
Additional Information:©1986 The American Physical Society Received 28 February 1986 We wish to thank S.E. Koonin, M.-C. Chou, and V. Pönisch for helpful discussions. We would also like to thank C.A. Barnes for providing the enriched 13C target. We acknowledge support from National Science Foundation Grant No. PHY85-05682.
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Deposited On:03 Jan 2007
Last Modified:08 Nov 2021 20:38

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