1. A SEARCH FOR DEEPLY-BOUND KAONIC NUCLEAR STATES BY IN-FLIGHT ³He(K-, n) REACTION AT J-PARC.
- Author
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F. SAKUMA, S. AJIMURA, BEER, G., H. BHANG, BRAGADIREANU, M., BUEHLER, P., BUSSO, L., CARGNELLI, M., CHOI, S., CURCEANU, C., S. ENOMOTO, FASO, D., H. FUJIOKAJ, Y. FUJIWARA, T. FUKUDA, GUARALDO, C., T. HASHIMOTO, R. S. HAYANO, T. HIRAIWA, and M. IIO
- Subjects
KAONS ,NUCLEAR matter ,POTASSIUM ,HELIUM ,NUCLEAR reactions ,NEUTRONS ,SPECTRUM analysis - Abstract
We report on preliminary results of the J-PARC E15 experiment aiming to search for the simplest kaonic-nuclear bound-state, K
- pp, via in-flight ³He(K- ,n) reaction. The first physics data-taking was performed with 5 x 109 incident kaons on the ³He target, and 3 x 105 neutrons were collected by a forward neutron counter placed 15 m away from center of the target at 0 degrees. The semi-inclusive neutron spectrum shows clear peak structure composed of the quasi-elastic K- n → K- n and the charge exchange K- p → ...0 n reactions as expected. [ABSTRACT FROM AUTHOR]- Published
- 2014
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