https://doi.org/10.1051/epjconf/20148102016
Search for the K−pp bound state via the in-flight 3He(K−, n) reaction
1 Research Center for Nuclear Physics (RCNP), Osaka University, Osaka, 567-0047, Japan
2 RIKEN Nishina Center, RIKEN, Wako, 351-0198, Japan
3 Department of Physics and Astronomy, University of Victoria, Victoria BC V8W 3P6, Canada
4 Department of Physics, Seoul National University, Seoul, 151-742, South Korea
5 Laboratori Nazionali di Frascati dell’ INFN, I-00044 Frascati, Italy
6 National Institute of Physics and Nuclear Engineering - IFIN HH, Romania
7 Stefan-Meyer-Institut für subatomare Physik, A-1090 Vienna, Austria
8 INFN Sezione di Torino, Torino, Italy
9 Dipartimento di Fisica Generale, Universita’ di Torino, Torino, Italy
10 Department of Physics, Osaka University, Osaka, 560-0043, Japan
11 Department of Physics, Kyoto University, Kyoto, 606-8502, Japan
12 Department of Physics, The University of Tokyo, Tokyo, 113-0033, Japan
13 Laboratory of Physics, Osaka Electro-Communication University, Osaka, 572-8530, Japan
14 High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
15 Department of Physics, Tokyo Institute of Technology, Tokyo, 152-8551, Japan
16 Technische Universit¨at München, D-85748, Garching, Germany
17 Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902, Japan
18 Department of Physics, Tohoku University, Sendai, 980-8578, Japan
19 Excellence Cluster Universe, Technische Universit¨at München, D-85748, Garching, Germany
20 Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul, 139-706, South Korea
a e-mail: sada@rcnp.osaka-u.ac.jp
Published online: 26 November 2014
In the J-PARC E15 experiment, a K− pp search was performed via the 3He(K−, n) reaction at 1.0 GeV/c. A forward-going neutron is detected by a neutron counter with 15 m flight length, and decay particles from K− pp are simultaneously measured by a cylindrical detector system that surrounds a liquid 3He target system. In March and May, 2013, we carried out the first physics data-taking with 5×109 incident kaons on the 3He target, and we have obtained a preliminary exclusive analysis result of 3He(K−, Λp)n reaction.
© Owned by the authors, published by EDP Sciences, 2014
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