TY - JOUR
T1 - Experimental progress in hypernuclear physics
AU - Tamura, Hirokazu
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2004
Y1 - 2004
N2 - Recent experimental progress of hypernuclear physics is reviewed. Detailed level structure of various p-shell Λ hypernuclei has been investigated by γ-ray spectroscopy with Hyperball and an Nal counter array, and the strengths of all the spin-dependent components of the ΛN interaction have been determined. The (e,e′K+) reaction has been successfully introduced to hypernuclear spectroscopy at Jefferson Laboratory with a resolution better than 1 MeV .(FWHM). The first experiment with the (π-, K-) reaction was carried out at KEK to produce neutron-rich hypernuclei. Double hypernuclear events interpreted as 4ΛΛH were observed by detecting two π-'s from sequential weak decay. In an emulsion-counter hybrid experiment, a double Λ hypernucleus 6ΛΛ He was observed and the strength of the ΛΛ interaction was unambiguously derived. A series of KEK experiments studying weak decays of 5Λ He and Λ12C have solved the so-called Γn/ Γp ratio puzzle.
AB - Recent experimental progress of hypernuclear physics is reviewed. Detailed level structure of various p-shell Λ hypernuclei has been investigated by γ-ray spectroscopy with Hyperball and an Nal counter array, and the strengths of all the spin-dependent components of the ΛN interaction have been determined. The (e,e′K+) reaction has been successfully introduced to hypernuclear spectroscopy at Jefferson Laboratory with a resolution better than 1 MeV .(FWHM). The first experiment with the (π-, K-) reaction was carried out at KEK to produce neutron-rich hypernuclei. Double hypernuclear events interpreted as 4ΛΛH were observed by detecting two π-'s from sequential weak decay. In an emulsion-counter hybrid experiment, a double Λ hypernucleus 6ΛΛ He was observed and the strength of the ΛΛ interaction was unambiguously derived. A series of KEK experiments studying weak decays of 5Λ He and Λ12C have solved the so-called Γn/ Γp ratio puzzle.
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U2 - 10.1143/PTPS.156.104
DO - 10.1143/PTPS.156.104
M3 - Article
AN - SCOPUS:14944362217
VL - 156
SP - 104
EP - 123
JO - Progress of Theoretical Physics Supplement
JF - Progress of Theoretical Physics Supplement
SN - 0375-9687
ER -