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Structure near the K- + p + p threshold in the in-flight 3He(K-, Λp)n reaction
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- Sada, Y. (author)
- Osaka University
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- Ajimura, S. (author)
- Osaka University
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- Bazzi, Mohamad (author)
- INFN Frascati National Laboratory
- show more...
- Buehler, P. (author)
- Cargnelli, M. (author)
- Curceanu, C. (author)
- Enomoto, S. (author)
- Fujioka, H (author)
- Fukuda, Tetsuya (author)
- Guaraldo, C. (author)
- Hashimoto, T. (author)
- Hiraiwa, T. (author)
- Iio, M. (author)
- Iliescu, M. (author)
- Inoue, K. (author)
- Ishiguro, Y. (author)
- Ishimoto, S. (author)
- Ishiwatari, T. (author)
- Itahashi, K (author)
- Iwai, M. (author)
- Iwasaki, M. (author)
- Kato, Y (author)
- Kawasaki, S. (author)
- Hong-Kou, Li (author)
- Ma, Y. (author)
- Marton, J. (author)
- Mizoi, Y. (author)
- Morra, O. (author)
- Nagae, T. (author)
- Noumi, H. (author)
- Ohnishi, H (author)
- Okada, S. (author)
- Outa, H. (author)
- Piscicchia, K. (author)
- Romero Vidal, A. (author)
- Sakaguchi, A (author)
- Sakuma, F. (author)
- Sato, Miyuki (author)
- Scordo, A. (author)
- Sekimoto, M (author)
- Shi, Hongqi (author)
- Sirghi, D. (author)
- Sirghi, F. (author)
- Suzuki, K. (author)
- Suzuki, S (author)
- Tanida, K. (author)
- Tokuda, M. (author)
- Tomono, D. (author)
- Toyoda, A. (author)
- Tsukada, K. (author)
- Widmann, E. (author)
- Wuenschek, B. K. (author)
- Yamaga, Takumi (author)
- Yim, Seon-Hee (author)
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- (creator_code:org_t)
- 2016-05-21
- 2016
- English.
- In: Progress of Theoretical and Experimental Physics. - : Oxford University Press (OUP). - 2050-3911. ; 2016:5
- Journal article (peer-reviewed)
Abstract
Subject headings
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- To search for an S = -1 di-baryonic state which decays toΛp, the 3He(K-,Λp)nmissing reaction was studied at 1.0 GeV/c. Unobserved neutrons were kinematically identified from the missing mass MX of the 3He (K-,Λp) X reaction in order to have a large acceptance for the Λpn final state. The observed Λpn events, distributed widely over the kinematically allowed region of the Dalitz plot, establish that the major component comes from a three-nucleon absorption process. A concentration of events at a specific neutron kinetic energy was observed in a region of low momentum transfer to the Λp. To account for the observed peak structure, the simplest S-wave polewas assumed to exist in the reaction channel, having a Breit-Wigner formin energy and with a Gaussian form factor. A minimum X2 method was applied to deduce its mass, MX = 2355+6 -8 (stat.) ±12 (syst.)MeV/c2, and decay width, γX = 110+19 -17 (stat.) ±27 (syst.)MeV/c2, respectively. The form factor parameter QX ∼ 400MeV/c implies that the range of the interaction is about 0.5 fm.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
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- art (subject category)
- ref (subject category)
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- By the author/editor
- Sada, Y.
- Ajimura, S.
- Bazzi, Mohamad
- Beer, G.
- Bhang, H.
- Bragadireanu, M.
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- Buehler, P.
- Busso, L.
- Cargnelli, M.
- Choi, S
- Curceanu, C.
- Enomoto, S.
- Faso, D.
- Fujioka, H
- Fujiwara, Yuuki
- Fukuda, Tetsuya
- Guaraldo, C.
- Hashimoto, T.
- Hayano, R. S.
- Hiraiwa, T.
- Iio, M.
- Iliescu, M.
- Inoue, K.
- Ishiguro, Y.
- Ishikawa, T.
- Ishimoto, S.
- Ishiwatari, T.
- Itahashi, K
- Iwai, M.
- Iwasaki, M.
- Kato, Y
- Kawasaki, S.
- Kienle, P.
- Hong-Kou, Li
- Ma, Y.
- Marton, J.
- Matsuda, Y.
- Mizoi, Y.
- Morra, O.
- Nagae, T.
- Noumi, H.
- Ohnishi, H
- Okada, S.
- Outa, H.
- Piscicchia, K.
- Romero Vidal, A.
- Sakaguchi, A
- Sakuma, F.
- Sato, Miyuki
- Scordo, A.
- Sekimoto, M
- Shi, Hongqi
- Sirghi, D.
- Sirghi, F.
- Suzuki, K.
- Suzuki, S
- Suzuki, T.
- Tanida, K.
- Tatsuno, H.
- Tokuda, M.
- Tomono, D.
- Toyoda, A.
- Tsukada, K.
- Vazquez Doce, O.
- Widmann, E.
- Wuenschek, B. K.
- Yamaga, Takumi
- Yamazaki, T.
- Yim, Seon-Hee
- Zhang, Q.
- Zmeskal, J.
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- NATURAL SCIENCES
- NATURAL SCIENCES
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- Lund University
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