Search for narrow dibaryon resonances by the pd→pdX and pd→ppX reactions

A. Tamii, K. Hatanaka, M. Hatano, D. Hirooka, J. Kamiya, H. Kato, Y. Maeda, T. Saito, H. Sakai, S. Sakoda, K. Sekiguchi, N. Uchigashima, T. Uesaka, T. Wakasa, K. Yako

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Abstract

Nucleon-nucleon decoupled dibaryons below the pion emission threshold have been investigated by the pd→pdX and pd→ppX reactions at Ep - 300 MeV. Such dibaryons are predicted to either decay into a deuteron or two nucleons by emitting a γ ray and consequently have a very narrow width of less than 1 keV. The experiment was carried out at the Research Center for Nuclear Physics employing a two-arm magnetic spectrometer. A mass resolution of 0.95 MeV and background-free condition have been achieved. No resonance was found in either the d + γ or p + n + γ decay channels within the mass region of 1896-1914 MeV. Upper limits for the dibaryon production cross section are presented.

Original languageEnglish
Pages (from-to)470011-470014
Number of pages4
JournalPhysical Review C - Nuclear Physics
Volume65
Issue number4
Publication statusPublished - Apr 1 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Tamii, A., Hatanaka, K., Hatano, M., Hirooka, D., Kamiya, J., Kato, H., Maeda, Y., Saito, T., Sakai, H., Sakoda, S., Sekiguchi, K., Uchigashima, N., Uesaka, T., Wakasa, T., & Yako, K. (2002). Search for narrow dibaryon resonances by the pd→pdX and pd→ppX reactions. Physical Review C - Nuclear Physics, 65(4), 470011-470014.