Gamma spectroscopy of hypernuclei: a decade of Hyperball project and future plans at J-PARC

H. Tamura; Y. Ma; N. Chiga; K. Hosomi; T. Koike; M. Mimori; K. Miwa; M. Sato; K. Shirotori; M. Ukai; T. O. Yamamoto

doi:10.1016/j.nuclphysa.2010.01.168

Gamma spectroscopy of hypernuclei: a decade of Hyperball project and future plans at J-PARC

H. Tamura, Y. Ma, N. Chiga, K. Hosomi, T. Koike, M. Mimori, K. Miwa, M. Sato, K. Shirotori, M. Ukai, T. O. Yamamoto

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

24 Citations (Scopus)

Abstract

Since 1998 we have conducted the project of precision hypernuclear γ-ray spectroscopy using the Ge detector array, Hyperball, and revealed precise level schemes of various p-shell hypernuclei. In the latest experiment at KEK (E566), the ground-state spacing of _Λ¹¹C and _Λ¹²C hypernuclei have been obtained using the ¹²C (π⁺, K⁺) _Λ¹¹B, _Λ¹²C reaction. The accumulated data on the p-shell hypernuclear level energies allow us to establish all of the four strengths of the ΛN spin-dependent interactions and to discuss the ΛN-ΣN coupling force in a nucleus. Further experiments at J-PARC are being prepared, where we tackle new experimental challenges such as a precise measurement of the Λ-spin-flip B (M 1) values and exploration of sd-shell hypernuclei.

Original language	English
Pages (from-to)	3-10
Number of pages	8
Journal	Nuclear Physics A
Volume	835
Issue number	1-4
DOIs	https://doi.org/10.1016/j.nuclphysa.2010.01.168
Publication status	Published - 2010 Apr 1

Keywords

Gamma-ray spectroscopy
Hyperball
Hypernuclei
J-PARC
ΛN interaction

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.nuclphysa.2010.01.168

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title = "Gamma spectroscopy of hypernuclei: a decade of Hyperball project and future plans at J-PARC",

abstract = "Since 1998 we have conducted the project of precision hypernuclear γ-ray spectroscopy using the Ge detector array, Hyperball, and revealed precise level schemes of various p-shell hypernuclei. In the latest experiment at KEK (E566), the ground-state spacing of Λ11C and Λ12C hypernuclei have been obtained using the 12C (π+, K+) Λ11B, Λ12C reaction. The accumulated data on the p-shell hypernuclear level energies allow us to establish all of the four strengths of the ΛN spin-dependent interactions and to discuss the ΛN-ΣN coupling force in a nucleus. Further experiments at J-PARC are being prepared, where we tackle new experimental challenges such as a precise measurement of the Λ-spin-flip B (M 1) values and exploration of sd-shell hypernuclei.",

keywords = "Gamma-ray spectroscopy, Hyperball, Hypernuclei, J-PARC, ΛN interaction",

author = "H. Tamura and Y. Ma and N. Chiga and K. Hosomi and T. Koike and M. Mimori and K. Miwa and M. Sato and K. Shirotori and M. Ukai and Yamamoto, {T. O.}",

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T2 - a decade of Hyperball project and future plans at J-PARC

AU - Tamura, H.

AU - Ma, Y.

AU - Chiga, N.

AU - Hosomi, K.

AU - Koike, T.

AU - Mimori, M.

AU - Miwa, K.

AU - Sato, M.

AU - Shirotori, K.

AU - Ukai, M.

AU - Yamamoto, T. O.

PY - 2010/4/1

Y1 - 2010/4/1

N2 - Since 1998 we have conducted the project of precision hypernuclear γ-ray spectroscopy using the Ge detector array, Hyperball, and revealed precise level schemes of various p-shell hypernuclei. In the latest experiment at KEK (E566), the ground-state spacing of Λ11C and Λ12C hypernuclei have been obtained using the 12C (π+, K+) Λ11B, Λ12C reaction. The accumulated data on the p-shell hypernuclear level energies allow us to establish all of the four strengths of the ΛN spin-dependent interactions and to discuss the ΛN-ΣN coupling force in a nucleus. Further experiments at J-PARC are being prepared, where we tackle new experimental challenges such as a precise measurement of the Λ-spin-flip B (M 1) values and exploration of sd-shell hypernuclei.

AB - Since 1998 we have conducted the project of precision hypernuclear γ-ray spectroscopy using the Ge detector array, Hyperball, and revealed precise level schemes of various p-shell hypernuclei. In the latest experiment at KEK (E566), the ground-state spacing of Λ11C and Λ12C hypernuclei have been obtained using the 12C (π+, K+) Λ11B, Λ12C reaction. The accumulated data on the p-shell hypernuclear level energies allow us to establish all of the four strengths of the ΛN spin-dependent interactions and to discuss the ΛN-ΣN coupling force in a nucleus. Further experiments at J-PARC are being prepared, where we tackle new experimental challenges such as a precise measurement of the Λ-spin-flip B (M 1) values and exploration of sd-shell hypernuclei.

KW - Gamma-ray spectroscopy

KW - Hyperball

KW - Hypernuclei

KW - J-PARC

KW - ΛN interaction

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Gamma spectroscopy of hypernuclei: a decade of Hyperball project and future plans at J-PARC

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Keywords

ASJC Scopus subject areas

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