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, J. K. 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)

Abstract

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
Volume19
Issue number12
DOIs
Publication statusPublished - 2010 Dec
Externally publishedYes

ASJC Scopus subject areas

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

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    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