Extraction of ΛΛ scattering length

C. J. Yoon, H. Akikawa, K. Aoki, Y. Fukao, H. Funahashi, M. Hayata, K. Imai, K. Miwa, H. Okada, N. Saito, H. D. Sato, K. Shoji, H. Takahashi, K. Taketani, J. Asai, M. Kurosawa, M. Ieiri, T. Hayakawa, T. Kishimoto, A. SatoY. Shimizu, K. Yamamoto, T. Yoshida, T. Hibi, K. Nakazawa, Jung Keun Ahn, B. H. Choi, S. J. Kim, S. H. Kim, B. D. Park, I. G. Park, J. S. Song, C. S. Yoon, K. Tanida, A. Ohnishi

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1 Citation (Scopus)


We determine ΛΛ scattering parameters from a ΛΛ invariant mass spectrum that was obtained by 12C(K-, K+ΛΛ) reaction at the KEK Proton Synchrotron. In the framework of Watson's procedure, the obtained scattering length αΛ Λ = - 0.10,-2.37 + 0.45,0.0 and effective range Λ, = 13.90<-13.90>+16.10, ,9.48fm are most consistent with the values predicted by using the Nijmegen soft core models (NSC97's). However, the predicted values by using the Nijmegen hard-core ND (G-matrix) and the extended soft-core (ESC00) models are out of two standard deviations from the determined scattering parameters.

Original languageEnglish
Pages (from-to)2448-2453
Number of pages6
JournalInternational Journal of Modern Physics E
Issue number12
Publication statusPublished - 2010 Dec 1
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Yoon, C. J., Akikawa, H., Aoki, K., Fukao, Y., Funahashi, H., Hayata, M., Imai, K., Miwa, K., Okada, H., Saito, N., Sato, H. D., Shoji, K., Takahashi, H., Taketani, K., Asai, J., Kurosawa, M., Ieiri, M., Hayakawa, T., Kishimoto, T., ... Ohnishi, A. (2010). Extraction of ΛΛ scattering length. International Journal of Modern Physics E, 19(12), 2448-2453. https://doi.org/10.1142/S0218301310016934