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- Title
J-PARC E27 Experiment to Search for a Nuclear Kaon Bound State K pp.
- Authors
Ichikawa, Y.; Bhang, H.; Bufalino, S.; Ekawa, H.; Evtoukhovitch, P.; Feliciello, A.; Fujioka, H.; Hasegawa, S.; Hayakawa, S.; Honda, R.; Hosomi, K.; Imai, K.; Ishimoto, S.; Joo, C.; Kanatsuki, S.; Kiuchi, R.; Koike, T.; Kumawat, H.; Matsumoto, Y.; Miwa, K.
- Abstract
In the J-PARC E27 experiment, we search for a K pp bound state via the d( π, K) reaction at 1.7 GeV/ c at the K1.8 beam line. The binding energy and decay width of the K pp bound state can be obtained in the missing mass measurement with a good energy resolution of 2 MeV/ c. A range counter array (RCA) was constructed to detect the two high-momentum protons from the K pp decay and to reduce the background such as quasi-free hyperon production. Recently, we have carried out a pilot run in June, 2012. The d( π, K) missing-mass spectrum has been obtained for the first time. In this report, an overview of the E27 experiment and a preliminary result on this pilot run are presented.
- Subjects
KAONS; PROTON-proton interactions; BOUND states; PHYSICS experiments; NUCLEAR reactions; BINDING energy; RADIOACTIVE decay; MASS measurement
- Publication
Few-Body Systems, 2013, Vol 54, Issue 7-10, p1191
- ISSN
0177-7963
- Publication type
Article
- DOI
10.1007/s00601-013-0668-3