TY - JOUR
T1 - Spectroscopy of Λ hypernuclei
AU - Hashimoto, O.
AU - Tamura, H.
N1 - Funding Information:
The experiments with the SKS spectrometer were carried out under the KEK-PS SKS collaboration and those by the reaction under JLab E89-009 and E01-011 collaboration. A series of -ray spectroscopy experiments were conducted under Hyperball collaboration. The authors deeply thank the collaborators for their efforts and useful discussions, in particular, Profs. S. Homma, S. Kato, T. Nagae, H. Noumi, T. Takahashi, T. Fukuda, E. Hungerford, L. Tang, J. Reinhold, S.N. Nakamura, K. Imai, T. Kishimoto, M. May, S.H. Zhou and Drs. T. Hasegawa, Y. Fujii, T. Endo, H. Hotchi, T. Miyoshi, S. Ajimura, K. Tanida, H. Akikawa, R.E. Chrien, M. Ukai and Y. Miura. We are also grateful to Prof. T. Yamazaki as the director of Institute for Nuclear Study (INS), University of Tokyo, and Prof. K. Nakai as the head of the office of KEK experiment planning and program coordination for their support at the earlier stage of this research program. Discussions on the theoretical aspects of hypernuclear spectroscopy with Profs. T. Motoba, K. Itonaga, E. Hiyama and Drs. D.J. Millener, M. Sotona and P. Bydzovski were also indispensable to the present work. We are very grateful to Prof. L. Cardman for a critical reading of the manuscript. The program is partly supported by the Specially Promoted Program (12002001), Creative Research Program (16GS0201), Scientific Research on Priority Areas (08239102) and Basic Research (09304028, 09554007, 11440070, 15204014) of Grant-in-Aid from the MEXT, Japan and US–Japan Collaborative Research Program of Japan Society for the Promotion of Science.
PY - 2006/10
Y1 - 2006/10
N2 - Spectroscopy of Λ hypernuclei has recently become one of the most valuable tools for the experimental investigation of strangeness nuclear physics. Following the pioneering (π+, K+) reaction spectroscopy experiments at the BNL AGS in the 1970's, excitation spectra have been measured using this reaction for a wide variety of Λ hypernuclei with the superconducting kaon spectrometer (SKS) at the KEK 12 GeV PS. More recently, Λ hypernuclear spectroscopy was carried out for the first time using the (e, e′ K+) reaction and the continuous electron beam at the Thomas Jefferson National Accelerator Facility (Jefferson Lab). This reaction will be further explored using a new high-resolution kaon spectrometer (HKS) installed at Jefferson Lab. At the same time, precision γ-ray spectroscopy with a germanium detector array (Hyperball) has been successfully performed for p-shell Λ hypernuclei at the KEK 12 GeV PS and at the BNL AGS. Quantitative information on Λ hypernuclear structure was obtained and the strengths of the spin-dependent Λ-nucleon interaction in the p-shell region were derived. In this review article, the progress of Λ hypernuclear spectroscopy is described and future prospects are presented.
AB - Spectroscopy of Λ hypernuclei has recently become one of the most valuable tools for the experimental investigation of strangeness nuclear physics. Following the pioneering (π+, K+) reaction spectroscopy experiments at the BNL AGS in the 1970's, excitation spectra have been measured using this reaction for a wide variety of Λ hypernuclei with the superconducting kaon spectrometer (SKS) at the KEK 12 GeV PS. More recently, Λ hypernuclear spectroscopy was carried out for the first time using the (e, e′ K+) reaction and the continuous electron beam at the Thomas Jefferson National Accelerator Facility (Jefferson Lab). This reaction will be further explored using a new high-resolution kaon spectrometer (HKS) installed at Jefferson Lab. At the same time, precision γ-ray spectroscopy with a germanium detector array (Hyperball) has been successfully performed for p-shell Λ hypernuclei at the KEK 12 GeV PS and at the BNL AGS. Quantitative information on Λ hypernuclear structure was obtained and the strengths of the spin-dependent Λ-nucleon interaction in the p-shell region were derived. In this review article, the progress of Λ hypernuclear spectroscopy is described and future prospects are presented.
KW - (e, e K) reaction
KW - (π, K) reaction
KW - Reaction spectroscopy
KW - Λ hypernuclei
KW - γ-ray spectroscopy
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U2 - 10.1016/j.ppnp.2005.07.001
DO - 10.1016/j.ppnp.2005.07.001
M3 - Review article
AN - SCOPUS:33745266719
VL - 57
SP - 564
EP - 653
JO - Progress in Particle and Nuclear Physics
JF - Progress in Particle and Nuclear Physics
SN - 0146-6410
IS - 2
ER -