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Search for Θ+ via K+p → π +X reaction with high-resolution spectrometer system

  • Conference paper
Proceedings of The IX International Conference on Hypernuclear and Strange Particle Physics

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Abstract

A search for the Θ+ pentaquark in the K + p → π + X reaction was performed utilizing a high-resolution spectrometer at the K6 beam line of the KEK 12GeV Proton Synchrotron. Incident K + beams of 1.2 GeV/c were irradiated to a liquid hydrogen target. No significant evidence of the Θ+ was found. The upper limit of the differential cross section averaged over 2° to 20° in the laboratory frame for the K + p → π +Θ+ reaction was obtained to be 1.9 μb/sr at 90 % confidence level. From the present result, the t-channel process is excluded or the coupling constant gK*NΘ is quite small.

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Authors and Affiliations

  1. Department of Physics, Kyoto University, Kyoto, 606-8502, Japan

    S. Dairaku, H. Funahashi, M. Hayata, K. Imai, K. Miwa, M. Miyabe, M. Niiyama, N. Saito, Y. Seki & K. Shoji

  2. Department of Physics, Gifu University, Gifu, 501-1193, Japan

    T. Kameyama, K. Nakazawa & T. Watanabe

  3. High Energy Accelerator Research Organization (KEK), Ibaraki, 305-0801, Japan

    S. Ishimoto, T. Nagae, H. Noumi, Y. Sato, S. Sawada, M. Sekimoto, S. Suzuki, H. Takahashi, T. Takahashi, N. Tanaka & A. Toyoda

  4. Department of Physics and Astronomy, Ohio University, OH, USA

    K. Hicks & R. Zavislak

  5. Department of Physics, Osaka University, Toyonaka, 560-0043, Japan

    S. Ajimura

  6. Faculty of Engineering, Osaka Electro-Communication University, Osaka, 572-8230, Japan

    T. Fukuda

  7. Research Center for Nuclear Physics, Osaka University, Osaka, 567-0047, Japan

    T. Nakano & M. Yosoi

  8. RIKEN, Saitama, 351-0198, Japan

    M. Naruki & K. Tanida

  9. Department of Physics, Tohoku University, 980-8578, Miyagi, Japan

    S. Kinoshita, T. Koike, Y. Ma, Y. Miura, K. Shirotori & H. Tamura

  10. Paris-Sud University, Orsay, France

    J. Arvieux

  11. Department of Physics, University of Tokyo, Japan

    H. Fujioka, T. Maruta, D. Nakajima & T. N. Takahashi

Authors
  1. S. Dairaku
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  2. S. Ajimura
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  3. J. Arvieux
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  4. H. Fujioka
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  5. T. Fukuda
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  6. H. Funahashi
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  7. M. Hayata
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  8. K. Hicks
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  9. K. Imai
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  10. S. Ishimoto
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  11. T. Kameyama
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  12. S. Kinoshita
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  13. T. Koike
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  14. Y. Ma
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  15. T. Maruta
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  16. Y. Miura
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  17. K. Miwa
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  18. M. Miyabe
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  19. T. Nagae
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  20. D. Nakajima
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  21. T. Nakano
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  22. K. Nakazawa
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  23. M. Naruki
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  24. M. Niiyama
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  25. H. Noumi
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  26. N. Saito
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  27. Y. Sato
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  28. S. Sawada
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  29. Y. Seki
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  30. M. Sekimoto
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  31. K. Shirotori
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  32. K. Shoji
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  33. S. Suzuki
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  34. H. Takahashi
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  35. T. Takahashi
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  36. T. N. Takahashi
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  37. H. Tamura
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  38. N. Tanaka
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  39. K. Tanida
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  40. A. Toyoda
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  41. T. Watanabe
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  42. M. Yosoi
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  43. R. Zavislak
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Editor information

Editors and Affiliations

  1. Institut für Kernphysik, Universität Mainz, J.J. Becher-Weg 45, D-55099, Mainz, Germany

    Josef Pochodzalla  & Thomas Walcher  & 

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© 2007 Società Italiana di Fisica / Springer-Verlag

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Dairaku, S. et al. (2007). Search for Θ+ via K+p → π +X reaction with high-resolution spectrometer system. In: Pochodzalla, J., Walcher, T. (eds) Proceedings of The IX International Conference on Hypernuclear and Strange Particle Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-76367-3_73

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