Actions for The {pi}{sup +} Decay of Light Hypernuclei [electronic resource].

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The {pi}{sup +} Decay of Light Hypernuclei [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1999.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
10 pages : digital, PDF file
Additional Creators
Los Alamos National Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The observed π⁺ emission from the weak decay of the ⁴{sub Λ}He hypernucleus has been an intriguing puzzle for more than 30 years, because the Lambda decays in free space only by emission of a π{sup −} or a π°. We re-examine this puzzling weak decay with our focus upon a decay mechanism involving the Σ⁺N → π⁺nN decay of a virtual Σ⁺, stemming from ΛN to ΣN conversion (mixing) within the hypernucleus. We emphasize the observed energy distribution of the observed π⁺s compared to that of π⁻s in standard mesonic decay as well as the isotropic angular distribution of the π ⁺s. Competing suggestions to explain the positive pion weak decay have been offered. A possible search for π⁺ decay from the other Λ hypernuclei is explored as means to test our hypothesis.
Report Numbers
E 1.99:la-ur-99-2294
la-ur-99-2294
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
02/19/1999.
"la-ur-99-2294"
Asian Pacific Center for Theoretical Physics (APCTP) Workshop on Strangeness Nuclear Physics, Seoul (KR), 02/19/1999--02/22/1999.
Gibson, B.F.
Funding Information
W-7405-ENG-36
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