Measurement of the Ξ-p scattering cross sections at low energy

J. K. Ahn, S. Aoki, K. S. Chung, M. S. Chung, H. En'yo, T. Fukuda, H. Funahashi, Y. Goto, A. Higashi, M. Ieiri, T. Iijima, M. Iinuma, K. Imai, Y. Itow, J. M. Lee, S. Makino, A. Masaike, Y. Matsuda, Y. Matsuyama, S. MiharaC. Nagoshi, I. Nomura, I. S. Park, N. Saito, M. Sekimoto, Y. M. Shin, K. S. Sim, R. Susukita, R. Takashima, F. Takeutchi, P. Tlustý, S. Weibe, S. Yokkaichi, K. Yoshida, M. Yoshida, T. Yoshida, S. Yamashita

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)


In this Letter we report on the cross-section measurements for Ξ-p elastic and inelastic scatterings at low energy using an active scintillating fiber target. Upper limit for the total cross section of the elastic scattering was found to be 24 mb at 90% confidence level, and the total cross section for the Ξ-p→ΛΛ reaction was found to be 4.3-2.7+6.3 mb. We compare these results with currently competing theoretical estimates.

Original languageEnglish
Pages (from-to)214-218
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number2-3
Publication statusPublished - 2006 Feb 9
Externally publishedYes

Bibliographical note

Funding Information:
We would like to thank the staff of the KEK proton synchrotron for their continuous support. We also thank Prof. Y. Fujiwara, Dr. C. Nakamoto and Dr. Y. Nara for valuable discussions and for providing us with theoretical calculation results. This work was supported in part by a Grant-in-Aid for Scientific Research (08239103), the Ministry of Science, Culture and Education, Japan. The work of J.K. Ahn was supported by a Korea Research Foundation grant (KRF-2003-015-C00130).


  • Ξ p→ΛΛ scattering
  • Ξp elastic scattering

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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