Published December 2003
| Version v1
Journal article
Neutron energy spectra from the nonmesonic weak decay of Λ12C and Λ89Y hypernuclei
Creators
- Kim, J.H.1, 2, 3, 4, 5, 6, 7
- Bhang, H.1, 2, 3, 4, 5, 6, 7
- Kim, M.J.1, 2, 3, 4, 5, 6, 7
- Kim, Y.D.1, 2, 3, 4, 5, 6, 7
- Park, H.1, 2, 3, 4, 5, 6, 7
- Ajimura, S.1, 2, 3, 4, 5, 6, 7
- Kishimoto, T.1, 2, 3, 4, 5, 6, 7
- Minami, S.1, 2, 3, 4, 5, 6, 7
- Mori, T.1, 2, 3, 4, 5, 6, 7
- Sakaguchi, A.1, 2, 3, 4, 5, 6, 7
- Shimizu, Y.1, 2, 3, 4, 5, 6, 7
- Sumihama, M.1, 2, 3, 4, 5, 6, 7
- Endo, T.1, 2, 3, 4, 5, 6, 7
- Hashimoto, O.1, 2, 3, 4, 5, 6, 7
- Miyoshi, T.1, 2, 3, 4, 5, 6, 7
- Nishida, J.1, 2, 3, 4, 5, 6, 7
- Saito, T.1, 2, 3, 4, 5, 6, 7
- Sato, Y.1, 2, 3, 4, 5, 6, 7
- Satoh, S.1, 2, 3, 4, 5, 6, 7
- Takahashi, T.1, 2, 3, 4, 5, 6, 7
- and others
- 1. Department of Physics, Hampton University, Hampton, Virginia 23668 (United States)
- 2. Department of Physics, North Carolina A and T State University, Greensboro, North Carolina 27411 (United States)
- 3. Graduate School of Science, University of Tokyo, Tokyo 113-0033 (Japan)
- 4. High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801 (Japan)
- 5. Department of Physics, Tohoku University, Sendai, 980-8578 (Japan)
- 6. Department of Physics, Osaka University, Toyonaka, Osaka 560-0043 (Japan)
- 7. Department of Physics, Seoul National University, Seoul 151-742 (Korea, Republic of)
Description
We have measured the neutron spectra emitted in the weak decay of Λ12C and Λ89Y over the energy region above 10 MeV in the (π+,K+) reaction with better statistics and an improved signal-to-background ratio. The neutron yields in the nonmesonic weak decays were obtained from the spectra. By using the proton yield of Λ12C, the Γn/Γp ratio was estimated to be 0.51±0.15 (stat) from the neutron-to-proton yield ratio for the first time, which suggests the Γn/Γp ratio is significantly less than unity
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 68
- Journal Issue
- 6
- Journal Page Range
- p. 065201-065201.5
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36023333
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- CARBON 12; ENERGY SPECTRA; HYPERNUCLEI; KAONS PLUS; MEV RANGE; NEUTRON EMISSION; NEUTRON SPECTRA; NEUTRONS; NUCLEAR DECAY; NUCLEAR REACTION YIELD; PARTICLE DECAY; PION PLUS REACTIONS; PROTONS; YTTRIUM 89
- Descriptors DEC
- BARYONS; BOSONS; CARBON ISOTOPES; CHARGED-PARTICLE REACTIONS; DECAY; ELEMENTARY PARTICLES; EMISSION; ENERGY RANGE; EVEN-EVEN NUCLEI; FERMIONS; HADRON REACTIONS; HADRONS; INTERMEDIATE MASS NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; KAONS; LIGHT NUCLEI; MESON REACTIONS; MESONS; NUCLEAR FRAGMENTS; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; ODD-EVEN NUCLEI; PION REACTIONS; PSEUDOSCALAR MESONS; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SPECTRA; STABLE ISOTOPES; STRANGE MESONS; STRANGE PARTICLES; YIELDS; YTTRIUM ISOTOPES
Optional Information
- Notes
- (c) 2003 The American Physical Society