/ Experiment-HEP

Search for the $\Theta^{+}$ pentaquark at J-PARC

Moritsu, M. (Kyoto U.) ; Adachi, S. (Kyoto U.) ; Agnello, M. (INFN, Turin) ; Ajimura, S. (Osaka U., Res. Ctr. Nucl. Phys.) ; Aoki, K. (KEK, Tsukuba) ; Bhang, H.C. (Seoul Natl. U.) ; Bassalleck, B. (New Mexico U.) ; Botta, E. (INFN, Turin) ; Bufalino, S. (INFN, Turin) ; Chiga, N. (Tohoku U.) ; 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. (KEK, Tsukuba) ; Joo, C.W. (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. (INFN, Turin) ; Masumoto, S. (Tokyo U.) ; Matsumoto, Y. (Tohoku U.) ; Matsuoka, K. (Osaka U., Inst. Phys.) ; Miwa, K. (Tohoku U.) ; Nagae, T. (Kyoto U.) ; Naruki, M. (KEK, Tsukuba) ; Niiyama, M. (Kyoto U.) ; Noumi, H. (Osaka U., Res. Ctr. Nucl. Phys.) ; Nozawa, Y. (Kyoto U.) ; Ota, R. (Osaka U., Inst. Phys.) ; Ozawa, K. (KEK, Tsukuba) ; 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. (Osaka U., Res. Ctr. Nucl. Phys.) ; Sugimura, H. (Kyoto U.) ; Suzuki, S. (KEK, Tsukuba) ; Takahashi, H. (KEK, Tsukuba) ; Takahashi, T. (KEK, Tsukuba) ; Takahashi, T.N. (Nishina Ctr., RIKEN) ; Tamura, H. (Tohoku U.) ; Tanaka, T. (Osaka U., Inst. Phys.) ; Tanida, K. (JAEA, Ibaraki) ; 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. (Osaka U., Res. Ctr. Nucl. Phys.) ; Yoshida, K. (Osaka U., Inst. Phys.)

Published in: Nucl.Phys.
Year: 2013
Vol.: A914
Page No: 91-96
Pages: 6
Year: 2013

Abstract: We have been searching for the @Q^+ pentaquark via the @p^-p->K^-X reaction at the J-PARC hadron facility. No peak structure was observed in the missing mass spectrum obtained at 1.92 GeV/c beam momentum. The upper limit for the production cross section averaged over the scattering angle from 2^o to 15^o in the laboratory frame was derived to be 0.26 @mb/sr. In order to make a more stringent constraint we have also performed a measurement at 2.0 GeV/c. Present analysis status of this new data is reported.

Keyword(s): Pentaquark ; Exotic hadron ; J-PARC

Total numbers of views: 1090
Numbers of unique views: 466
DOI: 10.1016/j.nuclphysa.2013.01.010
 Record created 2013-10-08, last modified 2014-01-30

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