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Interference Effect between ϕ and Λ(1520) Production Channels in the γp→K
Ryu, S Y; Ahn, J K; Nakano, T; Ahn, D S; Ajimura, S; Akimune, H; Asano, Y; Chang, W C; Chen, J Y; Daté, S; Ejiri, H; Fujimura, H; Fujiwara, M; Fukui, S; Hasegawa, S; Hicks, K; Horie, K; Hotta, T; Hwang, S H; Imai, K; Ishikawa, T; Iwata, T; Kato, Y; Kawai, H; Kino, K; Kohri, H; Kon, Y; Kumagai, N; Lin, P J; Maeda, Y; Makino, S; Matsuda, T; Matsuoka, N; Mibe, T; Miyabe, M; Miyachi, M; Morino, Y; Muramatsu, N; Murayama, R; Nakatsugawa, Y; Nam, S I; Niiyama, M; Nomachi, M; Ohashi, Y; Ohkuma, H; Ohta, T; Ooba, T; Oshuev, D S; Parker, J D; Rangacharyulu, C.
Afiliación
  • Ryu SY; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Ahn JK; Department of Physics, Korea University, Seoul 02841, Republic of Korea.
  • Nakano T; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Ahn DS; RIKEN, The Institute of Physical and Chemical Research, Wako, Saitama 351-0198, Japan.
  • Ajimura S; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Akimune H; Department of Physics, Konan University, Kobe, Hyogo 658-8501, Japan.
  • Asano Y; XFEL Project Head Office, RIKEN, Sayo, Hyogo 679-5143, Japan.
  • Chang WC; Institute of Physics, Academia Sinica, Taipei 11529, Taiwan.
  • Chen JY; Light Source Division, National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan.
  • Daté S; Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5143, Japan.
  • Ejiri H; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Fujimura H; Wakayama Medical College, Wakayama 641-8509, Japan.
  • Fujiwara M; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Fukui S; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Hasegawa S; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Hicks K; Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA.
  • Horie K; Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan.
  • Hotta T; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Hwang SH; Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Republic of Korea.
  • Imai K; Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan.
  • Ishikawa T; Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan.
  • Iwata T; Department of Physics, Yamagata University, Yamagata 990-8560, Japan.
  • Kato Y; Kobayashi-Maskawa Institute, Nagoya University, Nagoya, Aichi 464-8602, Japan.
  • Kawai H; Department of Physics, Chiba University, Chiba 263-8522, Japan.
  • Kino K; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Kohri H; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Kon Y; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Kumagai N; Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5143, Japan.
  • Lin PJ; Institute of Physics, Academia Sinica, Taipei 11529, Taiwan.
  • Maeda Y; Proton Therapy Center, Fukui Prefectural Hospital, Fukui 910-8526, Japan.
  • Makino S; Wakayama Medical College, Wakayama 641-8509, Japan.
  • Matsuda T; Department of Applied Physics, Miyazaki University, Miyazaki 889-2192, Japan.
  • Matsuoka N; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Mibe T; High Energy Accelerator Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan.
  • Miyabe M; Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan.
  • Miyachi M; Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan.
  • Morino Y; High Energy Accelerator Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan.
  • Muramatsu N; Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan.
  • Murayama R; Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan.
  • Nakatsugawa Y; High Energy Accelerator Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan.
  • Nam SI; Department of Physics, Pukyong National University, Busan 48513, Republic of Korea.
  • Niiyama M; Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
  • Nomachi M; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Ohashi Y; Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5143, Japan.
  • Ohkuma H; Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5143, Japan.
  • Ohta T; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
  • Ooba T; Department of Physics, Chiba University, Chiba 263-8522, Japan.
  • Oshuev DS; Institute of Physics, Academia Sinica, Taipei 11529, Taiwan.
  • Parker JD; Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
  • Rangacharyulu C; Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada.
Phys Rev Lett ; 116(23): 232001, 2016 Jun 10.
Article en En | MEDLINE | ID: mdl-27341225
ABSTRACT
The ϕ-Λ(1520) interference effect in the γp→K^{+}K^{-}p reaction has been measured for the first time in the energy range from 1.673 to 2.173 GeV. The relative phases between ϕ and Λ(1520) production amplitudes were obtained in the kinematic region where the two resonances overlap. The measurement results support strong constructive interference when K^{+}K^{-} pairs are observed at forward angles but destructive interference for proton emission at forward angles. Furthermore, the observed interference effect does not account for the sqrt[s]=2.1 GeV bump structure in forward differential cross sections for ϕ photoproduction. This fact suggests possible exotic structures such as a hidden-strangeness pentaquark state, a new Pomeron exchange, or rescattering processes via other hyperon states.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2016 Tipo del documento: Article País de afiliación: Japón
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2016 Tipo del documento: Article País de afiliación: Japón