Search for the pentaquark at J-PARC

• Moritsu, M.

• Adachi, S.

• Agnello, M.

• Ajimura, S.

• Aoki, K.

• Bhang, H.C.

• Bassalleck, B.

• Botta, E.

• Bufalino, S.

• Chiga, N.

• Ekawa, H.

• Evtoukhovitch, P.

• Feliciello, A.

• Fujioka, H.

• Hayakawa, S.

• Hiruma, F.

• Honda, R.

• Hosomi, K.

• Ichikawa, Y.

• Ieiri, M.

• Igarashi, Y.

• Imai, K.

• Ishibashi, N.

• Ishimoto, S.

• Itahashi, K.

• Iwasaki, R.

• Joo, C.W.

• Kanatsuki, S.

• Kim, M.J.

• Kim, S.J.

• Kiuchi, R.

• Koike, T.

• Komatsu, Y.

• Kulikov, V.V.

• Marcello, S.

• Masumoto, S.

• Matsumoto, Y.

• Matsuoka, K.

• Miwa, K.

• Nagae, T.

• Naruki, M.

• Niiyama, M.

• Noumi, H.

• Nozawa, Y.

• Ota, R.

• Ozawa, K.

• Saito, N.

• Sakaguchi, A.

• Sako, H.

• Samoilov, V.

• Sato, M.

• Sato, S.

• Sato, Y.

• Sawada, S.

• Sekimoto, M.

• Shirotori, K.

• Sugimura, H.

• Suzuki, S.

• Takahashi, H.

• Takahashi, T.

• Takahashi, T.N.

• Tamura, H.

• Tanaka, T.

• Tanida, K.

• Tokiyasu, A.O.

• Tomida, N.

• Tsamalaidze, Z.

• Ukai, M.

• Yagi, K.

• Yamamoto, T.O.

• Yang, S.B.

• Yonemoto, Y.

• Yoon, C.J.

• Yoshida, K.

Abstract

We have been searching for the Θ^+ pentaquark via the π^−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° to 15° in the laboratory frame was derived to be 0.26 μb/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.

Journal

• Nuclear Physics A

  Nuclear Physics A 914 91-96, 2013-09-20

  Elsevier B.V.

Keywords

• Pentaquark
• Exotic hadron
• J-PARC

Details

• CRID: 1050845760707964544
• NII Article ID: 120005324914
• NII Book ID: AA00760032
• ISSN: 03759474
• HANDLE: 2433/178756
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles