(. pi. ,K) production of hypernuclei [electronic resource]
Since a single Λ behaves as a distinguishable particle in the nucleus, it can occupy any single-particle orbit in the Λ-nucleus average field. Well-defined series of peaks corresponding to nodeless single-particle states have been identified in heavy nuclei using the (π⁺,K⁺) reaction at Brookhaven....
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Online Access |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C : Oak Ridge, Tenn. :
United States. Dept. of Energy. Office of Energy Research ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
1990.
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| Summary: | Since a single Λ behaves as a distinguishable particle in the nucleus, it can occupy any single-particle orbit in the Λ-nucleus average field. Well-defined series of peaks corresponding to nodeless single-particle states have been identified in heavy nuclei using the (π⁺,K⁺) reaction at Brookhaven. The spacings of the Λ single-particle levels for a given A constrain both the radius and the depth of the Λ potential well. It can be seen that a Woods-Saxon well with a depth of 28 MeV, a diffuseness of 0.54 fm and radius parameter r₀ = 1.128 + 0.439 A⁻²³ fm gives an excellent fit to the data, as do phenomenological Λ-nucleus potentials, based on a spherical Skyrme Hartree-Fock approach. The essential features of the potentials are an attractive component linear in the nuclear density with a depth of ∼60 MeV, a repulsive component proportional to a higher power of the density and a non-locality, which gives an energy dependence to the equivalent local potential, to fine tune the fit to binding energies over the full mass range. This paper discusses the pion reactions encounter with nuclei to products these hypernuclei. |
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| Item Description: | Published through the Information Bridge: DOE Scientific and Technical Information. 11/01/1990. "bnl-45397" " conf-900777--4" "DE91005546" Workshop on science at the KAON factory, Vancouver (Canada), 23-28 Jul 1990. Millener, D.J. |
| Physical Description: | Pages: (8 p) : digital, PDF file. |