/ Experiment-HEP

Search for Pentaquark $\Theta^{+}$ in Hadronic Reaction at J-PARC

Naruki, M. (KEK, Tsukuba) ; Adachi, S. (Kyoto U.) ; Agnello, M. (Turin Polytechnic) ; Ajimura, S. (Osaka U., Res. Ctr. Nucl. Phys.) ; Aoki, K. (KEK, Tsukuba) ; Bang, H. (Seoul Natl. U.) ; Bassalleck, B. (New Mexico U.) ; Botta, E. (Turin U.) ; Bufalino, S. (INFN, Turin) ; Ekawa, H. (Kyoto U.) ; Evtoukhovitch, P. (Dubna, JINR) ; Feliciello, A. (INFN, Turin) ; Fujioka, H. (Kyoto U.) ; Hayakawa, S. (Osaka U., Inst. Phys.) ; Hiruma, F. (Tohoku U.) ; Honda, R. (Tohoku U.) ; Hosomi, K. (Tohoku U.) ; Ichikawa, Y. (Kyoto U.) ; Ieiri, M. (KEK, Tsukuba) ; Igarashi, Y. (KEK, Tsukuba) ; Imai, K. (JAEA, Ibaraki) ; Ishibashi, N. (Osaka U., Inst. Phys.) ; Ishimoto, S. (KEK, Tsukuba) ; Itahashi, K. (Nishina Ctr., RIKEN) ; Iwasaki, R. (Nara Women's U.) ; Joo, G.G. (Seoul Natl. U.) ; Kanatsuki, S. (Kyoto U.) ; Kim, M.J. (Seoul Natl. U.) ; Kim, S.J. (Seoul Natl. U.) ; Kiuchi, R. (Seoul Natl. U.) ; Koike, T. (Tohoku U.) ; Komatsu, Y. (Tokyo U.) ; Kulikov, V.V. (Moscow, ITEP) ; Marcello, S. (Turin U.) ; Masumoto, S. (Tokyo U.) ; Matsumoto, Y. (Tohoku U.) ; Matsuoka, K. (Osaka U., Inst. Phys.) ; Miwa, K. (Tohoku U.) ; Moritsu, M. (Kyoto U.) ; Nagae, T. (Kyoto U.) ; Niiyama, M. (Kyoto U.) ; Noumi, H. (Osaka U., Res. Ctr. Nucl. Phys.) ; Nozawa, Y. (Kyoto U.) ; Ota, R. (Osaka U., Inst. Phys.) ; Ozawa, K. (Tokyo U.) ; Saito, N. (KEK, Tsukuba) ; Sakaguchi, A. (Osaka U., Inst. Phys.) ; Sako, H. (JAEA, Ibaraki) ; Samoilov, V. (Dubna, JINR) ; Sato, M. (Tohoku U.) ; Sato, S. (JAEA, Ibaraki) ; Sato, Y. (KEK, Tsukuba) ; Sawada, S. (KEK, Tsukuba) ; Sekimoto, M. (KEK, Tsukuba) ; Shirotori, K. (Tohoku U.) ; Sugimura, H. (Kyoto U.) ; Suzuki, S. (KEK, Tsukuba) ; Takahashi, T.N. (Tokyo U.) ; Takahashi, H. (KEK, Tsukuba) ; Takahashi, T. (KEK, Tsukuba) ; Tamura, H. (Tohoku U.) ; Tanaka, T. (Osaka U., Inst. Phys.) ; Tanida, K. (Seoul Natl. U.) ; Tokiyasu, A.O. (Kyoto U.) ; Tomida, N. (Kyoto U.) ; Tsamalaidze, Z. (Dubna, JINR) ; Ukai, M. (Tohoku U.) ; Yagi, K. (Tohoku U.) ; Yamamoto, T.O. (Tohoku U.) ; Yang, S.B. (Seoul Natl. U.) ; Yonemoto, Y. (Tohoku U.) ; Yoon, C.J. (Seoul Natl. U.) ; Yoshida, K. (Osaka U., Inst. Phys.)

Published in: Few Body Syst.
Year: 2013
Vol.: 54
Page No: 955-960
Pages: 6
Year: 2013

Abstract: The first experiment at the J-PARC hadron facility, the J-PARC E19 experiment, aims at searching for the Θ (+) pentaquark in the hadronic reaction π (−) p → K (−) X using the missing-mass technique. Based on a superconducting magnet excited at 2.5 T, the spectrometer achieved the high mass resolution of 1.4 MeV/c(2) for the Θ (+) production process. The first data taking was performed in the autumn of 2010. No significant structure was observed in the missing-mass spectrum. The upper limit obtained for the differential cross section is 0.26 μb/sr in the laboratory frame at a 90 % CL.

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DOI: 10.1007/s00601-013-0685-2
 Запись создана 2013-09-05, последняя модификация 2014-01-30

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