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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
신승애scopus
Issue Date
2008
Journal Title
AIP Conference Proceedings
ISSN
0094-243XJCR Link
Citation
vol. 1011, pp. 135 - 139
Indexed
SCOPUS scopus
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
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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