Search for the K− pp bound state via the 3He(K−, n) reaction at 1 GeV/c

T Hashimoto ,B K Wuenschek ,Paul Kienle ,P Bühler ,S Ishimoto ,Yue Ma ,S Suzuki ,T Yamaga ,A Toyoda ,T Hiraiwa ,Masaharu Sato ,Takashi Ishikawa ,S Enomoto ,M Bragadireanu ,Y Matsuda ,D Tomono ,H Yim ,D Faso ,H Bhang ,M Iwai ,F Sirghi ,M Poli Lener ,A Sakaguchi ,M Iwasaki ,M Sekimoto ,Seonho Choi ,D Sirghi ,T Nagae ,Iio M ,H Kou ,K Tanida ,O Vázquez Doce ,M Iliescu ,H Tatsuno ,H Ohnìshì ,H Outa ,Q Zhang ,J Márton ,Kentaro Inoue ,C Guaraldo ,S Okada ,Y Sada ,K Itahashi ,F Sakuma ,Shingo Kawasaki ,H Shi ,A Romero Vidal ,O Morra ,M Cargnelli ,Yuya Fujiwara ,C Curceanu ,Y Mizoi ,H Noumi ,Y Kato ,R Hayano ,A Scordo ,T Yamazaki ,K Tsukada ,K Piscicchia ,S Ajimura ,L Busso ,Y Ishiguro ,Hiroyuki Fujioka ,K Suzuki ,Makoto Tokuda ,G Beer ,E Widmann ,T Fukuda ,T Suzuki ,T Ishiwatari ,J Zmeskal

doi:10.1088/1742-6596/569/1/012080

Search for the K− pp bound state via the 3He(K−, n) reaction at 1 GeV/c

T Hashimoto , B K Wuenschek + Show 69 more

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https://doi.org/10.1088/1742-6596/569/1/012080

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Journal: Journal of Physics: Conference Series	Publication Date: Dec 8, 2014
License type: cc-by

Affiliation: Technical University of Munich, High Energy Accelerator Research Organization, Osaka University, The University of Tokyo, University of Turin, Seoul National University, Tokyo Institute of Technology, Kyoto University, Osaka Electro-Communication University, Tohoku University, University of Victoria

#J-PARC Hadron Experimental Facility #BR Beam-line + Show 8 more

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Abstract

The J-PARC E15 experiment searches for the simplest kaonic nuclear bound state, K−pp, via the 3He(K−,n) reaction at the K1.8BR beam-line in the J-PARC hadron experimental facility. We performed the first data-taking in May, 2013, with 5 × 109 incident kaons on the 3He target. The preliminary results are reported focusing on the forward-neutron spectrum, which shows a clear peak structure composed of the quasi-elastic K−"n" → K−n and the charge-exchange K−"p" → K̄0n reactions as expected.

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