Matter with strangeness

H. Tamura

doi:10.1016/S0375-9474(03)01020-0

Matter with strangeness

H. Tamura

SCI - Physics

Research output: Contribution to journal › Article › peer-review

Abstract

A recent experimental progress of strangeness nuclear physics is reviewed from viewpoint of hyperon-nucleon (YN) and hyperon-hyperon (YY) interactions. Detailed level structure of Λ hypernuclei has been studied by γ-ray spectroscopy technique using a germanium detector array as well as an NaI counter array, which determined the strengths of the ΛN spin-spin and spin-orbit interactions. In the emulsion-counter hybrid experiment, a double Λ hypernucleus _ΛΛ ⁶ He was observed and the strength of the ΛΛ interaction was unambiguously derived. As for the ∑N interaction, a recent ²⁸Si(π^-, K⁺) spectrum suggests a strongly repulsive ∑-nucleus potential, while the spin-orbit force of ∑ is being studied by a ∑p scattering experiment.

Original language	English
Pages (from-to)	C84-C93
Journal	Nuclear Physics A
Volume	721
DOIs	https://doi.org/10.1016/S0375-9474(03)01020-0
Publication status	Published - 2003 Jun 30

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0375-9474(03)01020-0

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AB - A recent experimental progress of strangeness nuclear physics is reviewed from viewpoint of hyperon-nucleon (YN) and hyperon-hyperon (YY) interactions. Detailed level structure of Λ hypernuclei has been studied by γ-ray spectroscopy technique using a germanium detector array as well as an NaI counter array, which determined the strengths of the ΛN spin-spin and spin-orbit interactions. In the emulsion-counter hybrid experiment, a double Λ hypernucleus ΛΛ 6 He was observed and the strength of the ΛΛ interaction was unambiguously derived. As for the ∑N interaction, a recent 28Si(π-, K+) spectrum suggests a strongly repulsive ∑-nucleus potential, while the spin-orbit force of ∑ is being studied by a ∑p scattering experiment.

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