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Prog. Theor. Phys. Vol. 85 No. 6 (1991) pp. 1287-1298

[ Full Text PDF : FREE ACCESS (942K) ]

Direct Observation of Sequential Weak Decay of a Double Hypernucleus

S. Aoki,1) S. Y. Bahk,2) K. S. Chung,3) S. H. Chung,3) H. Funahashi,4) C. H. Hahn,5) T. Hara,6) S. Hirata,4) K. Hoshino,1) M. Ieiri,7) T. Iijima,4) K. Imai,4) T. Ishigami,8) Y. Itow,4) M. Kazuno,8) K. Kikuchi,9) C. O. Kim,10) D. C. Kim,3) J. Y. Kim,11) M. Kobayashi,8) K. Kodama,12) Y. Maeda,13) A. Masaike,4) A. Masuoka,12) Y. Matsuda,6) C. Nagoshi,14) M. Nakamura,1) S. Nakanishi,1) T. Nakano,4) K. Nakazawa,15) K. Niwa,1) H. Oda,12) H. Okabe,16) S. Ono,8) R. Ozaki,15) I. G. Park,3) Y. Sato,9) H. Shibuya,8) H. M. Shimizu,4) J. S. Song,3) M. Sugimoto,13) H. Tajima,1) R. Takashima,17) F. Takeutchi,18) K. H. Tanaka,7) M. Teranaka,19) I. Tezuka,9) H. Togawa,4) N. Ushida,12) S. Watanabe,8) T. Watanabe,19) J. Yokota16) and C. S. Yoon3)

1)Department of Physics, Nagoya University, Nagoya 464-01
2)Wonkwang University, Iri 570-749
3)Gyeongsang National University, Jinju 660-300
4)Department of Physics, Kyoto University, Kyoto 606
5)Changwon National College, Changwon 641-240
6)College of Liberal Arts, Kobe University, Kobe 657
7)KEK, National Laboratory for High Energy Physics, Tsukuba 305
8)Department of Physics, Toho University, Funabashi 274
9)Faculty of Education, Utsunomiya University, Utsunomiya 350
10)Korea University, Seoul 136-701
11)Chonnam National University, Kwangju 500-757
12)Aichi Univresity of Education, Kariya 448
13)Faculty of Education, Yokohama National University, Yokohama 240
14)Institute for Nuclear Study, University of Tokyo, Tanasi 188
15)Faculty of Education, Gifu University, Gifu 501-11
16)Science Education Institute of Osaka Prefecture, Osaka 558
17)Kyoto University of Education, Kyoto 612
18)Kyoto Sangyo University, Kyoto 603
19)Department of Physics, Osaka City University, Osaka 558

(Received February 1, 1991)

Abstract:

We have studied stars in nuclear emulsion due to the capture at rest of the Ξ- hyperons produced in the (K-, K+) reaction. The sequential weak decay of a double hypernucleus (nucleus with S = -2) has been directly observed. The double hypernucleus is assigned as either 10ΛΛBe or 13ΛΛB. This assignment excludes the existence of the H dibaryon lighter than 2203.7 ±0.7 MeV/c2.


URL : http://ptp.ipap.jp/link?PTP/85/1287/
DOI : 10.1143/PTP.85.1287

[ Full Text PDF : FREE ACCESS (942K) ] Citation:

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Citing Article(s) :

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  22. Progress of Theoretical Physics Supplement No.117 (1994) pp. 415-433 :
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