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자연과학대학
물리학전공
Journal papers
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Non-mesonic weak decays of Λ5He and Λ 12C hypernuclei using the (π+, K+) reactions
Title
Non-mesonic weak decays of Λ5He and Λ 12C hypernuclei using the (π+, K+) reactions
Authors
Okada S.
;
Ajimura S.
;
Aoki K.
;
Banu A.
;
Bhang H.C.
;
Fukuda T.
;
Hashimoto O.
;
Hwang J.I.
;
Kameoka S.
;
Kang B.H.
;
Kim E.H.
;
Kim J.H.
;
Kim M.J.
;
Maruta T.
;
Miura Y.
;
Miyake Y.
;
Nagae T.
;
Nakamura M.
;
Nakamura S.N.
;
Noumi H.
;
Okayasu Y.
;
Outa H.
;
Park H.
;
Saha P.K.
;
Sato Y.
;
Sekimoto M.
;
Shin S.
;
Takahashi T.
;
Tamura H.
;
Tanida K.
;
Toyoda A.
;
Tsukada K.
;
Watanabe T.
;
Yim H.J.
Ewha Authors
신승애
SCOPUS Author ID
신승애
Issue Date
2008
Journal Title
AIP Conference Proceedings
ISSN
0094-243X
Citation
AIP Conference Proceedings vol. 1011, pp. 135 - 139
Indexed
SCOPUS
Document Type
Conference Paper
Abstract
We have measured for the first time yields of both neutron-proton and neutron-neutron pairs emitted from the non-mesonic weak decay of the Λ 5He and Λ 12C hypernuclei, produced via the (π+,K+) reaction. From the yields of both the back-to-back np-pair events and nn-pair events, we have directly determined the ratio of the neutron- and proton-induced decay widths, Γn(Λn → nn)Γp(Λp → np). Meanwhile, we have also determined the quenching of the observed numbers of single nucleons and coincident nucleon pairs compared with theoretical calculations. Our results suggest that contributions from the two-nucleon-induced three-body process ΛNN → NNN are significant. © 2008 American Institute of Physics.
DOI
10.1063/1.2932278
ISBN
9780735405318
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