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Title: Search for the pentaquark at J-PARC
Authors: 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.  kyouindb  KAKEN_id
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.  kyouindb  KAKEN_id
Naruki, M.  kyouindb  KAKEN_id
Niiyama, M.  kyouindb  KAKEN_id
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.
Author's alias: 森津, 学
Keywords: Pentaquark
Exotic hadron
Issue Date: 20-Sep-2013
Publisher: Elsevier B.V.
Journal title: Nuclear Physics A
Volume: 914
Start page: 91
End page: 96
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.
Rights: © 2013 Elsevier B.V. Published by Elsevier B.V.
DOI(Published Version): 10.1016/j.nuclphysa.2013.01.010
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