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" → &barK;0n reactions as expected.

Details

Title
Search for the K− pp bound state via the 3He(K−, n) reaction at 1 GeV/c
Author
Hashimoto, T 1 ; Ajimura, S 2 ; Beer, G 3 ; Bhang, H 4 ; Bragadireanu, M 5 ; Buehler, P 6 ; Busso, L 7 ; Cargnelli, M 6 ; Choi, S 4 ; Curceanu, C 8 ; Enomoto, S 2 ; Faso, D 7 ; Fujioka, H 9 ; Fujiwara, Y 10 ; Fukuda, T 11 ; Guaraldo, C 8 ; Hayano, R S 10 ; Hiraiwa, T 2 ; Iio, M 12 ; Iliescu, M 8 ; Inoue, K 13 ; Ishiguro, Y 9 ; Ishikawa, T 10 ; Ishimoto, S 12 ; Ishiwatari, T 6 ; Itahashi, K 1 ; Iwai, M 12 ; Iwasaki, M 14 ; Kato, Y 1 ; Kawasaki, S 13 ; Kienle, P 15 ; Kou, H 16 ; Y Ma 1 ; Marton, J 6 ; Matsuda, Y 17 ; Mizoi, Y 11 ; Morra, O 18 ; Nagae, T 9 ; Noumi, H 2 ; Ohnishi, H 1 ; Okada, S 1 ; Outa, H 1 ; Piscicchia, K 8 ; M Poli Lener 8 ; A Romero Vidal 8 ; Sada, Y 9 ; Sakaguchi, A 13 ; Sakuma, F 1 ; Sato, M 1 ; Scordo, A 8 ; Sekimoto, M 12 ; Shi, H 10 ; Sirghi, D 19 ; Sirghi, F 19 ; Suzuki, K 6 ; Suzuki, S 12 ; Suzuki, T 10 ; Tanida, K 4 ; Tatsuno, H 8 ; Tokuda, M 16 ; Tomono, D 1 ; Toyoda, A 12 ; Tsukada, K 20 ; O Vazquez Doce 21 ; Widmann, E 6 ; Wuenschek, B K 6 ; Yamaga, T 13 ; Yamazaki, T 22 ; Yim, H 23 ; Zhang, Q 1 ; Zmeskal, J 6 

1  RIKEN Nishina Center, RIKEN, Wako, 351-0198, Japan 
2  Research Center for Nuclear Physics (RCNP), Osaka University, Osaka, 567-0047, 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  National Institute of Physics and Nuclear Engineering – IFIN HH, Romania 
6  Stefan-Meyer-Institut für subatomare Physik, A-1090 Vienna, Austria 
7  INFN Sezione di Torino, Torino, Italy; Dipartimento di Fisica Generale, Universita' di Torino, Torino, Italy 
8  Laboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, Italy 
9  Department of Physics, Kyoto University, Kyoto, 606-8502, Japan 
10  Department of Physics, The University of Tokyo, Tokyo, 113-0033, Japan 
11  Laboratory of Physics, Osaka Electro-Communication University, Osaka, 572-8530, Japan 
12  High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan 
13  Department of Physics, Osaka University, Osaka, 560-0043, Japan 
14  Department of Physics, Tokyo Institute of Technology, Tokyo, 152-8551, Japan; RIKEN Nishina Center, RIKEN, Wako, 351-0198, Japan 
15  Technische Universität München, D-85748, Garching, Germany 
16  Department of Physics, Tokyo Institute of Technology, Tokyo, 152-8551, Japan 
17  Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902, Japan 
18  INFN Sezione di Torino, Torino, Italy 
19  Laboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, Italy; National Institute of Physics and Nuclear Engineering – IFIN HH, Romania 
20  Department of Physics, Tohoku University, Sendai, 980-8578, Japan 
21  Laboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, Italy; Excellence Cluster Universe, Technische Universität München, D-85748, Garching, Germany 
22  Department of Physics, The University of Tokyo, Tokyo, 113-0033, Japan; RIKEN Nishina Center, RIKEN, Wako, 351-0198, Japan 
23  Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul, 139-706, South Korea 
Publication year
2014
Publication date
Dec 2014
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1088/1742-6596/569/1/012080
ProQuest document ID
2576807557
Copyright
© 2014. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.