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Volume 281 - The 26th International Nuclear Physics Conference (INPC2016) - Nuclear Structure A – Friday 16
Search For A Ξ Bound State In The 12C(K-,K+)X Reaction At 1.8 Gev/c
T. Nagae,* S. Kanatsuki, T. Gogami, H. Ekawa, T. Nanamura, M. Naruki, S. Hasegawa, K. Hosomi, Y. Ichikawa, K. Imai, H. Sako, S. Sato, H. Sugimura, K. Tanida, K. Kobayashi, S.H. Hayakawa, T. Hayakawa, R. Honda, Y. Nakada, M. Nakagawa, A. Sakaguchi, Y. Akazawa, M. Fujita, K. Miwa, Y. Sasaki, H. Tamura, T.O. Yamamoto, K. Aoki, T. Takahashi, M. Ukai, J.K. Ahn, W. Jung, S.H. Kim, E. Botta, A. Feliciello, S. Marcello, P. Evtoukhovitch, Z. Tsamalaidze, J.Y. Lee, T. Moon, S. Kimbara, T. Hasegawa, K. Shirotori
*corresponding author
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Pre-published on: 2017 May 04
Published on: 2017 May 09
We have carried out a pilot data taking of the J-PARC E05 experiment to search for the bound state peaks of $^{12}_\Xi$Be in the $^{12}$C$(K^-, K^+)X$ reaction at 1.8 GeV/$c$. The measurement was performed at the K1.8 beam line of the J-PARC hadron experimental hall with a typical $K^-$ beam intensity of $6\times 10^{5}$ every six seconds. So far the best energy resolution of about 6 MeV$_{FWHM}$ was achieved with the existing SKS spectrometer. With a reasonable statistics, we have succeeded to observe peak structures in the bound region, which seems to suggest that the potential depth of $\Xi$ would be deeper than 14 MeV estimated in the previous measurements.
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