EXTRACTION OF ΛΛ SCATTERING LENGTH

C J Yoon ,M Hayata,H Akikawa,K Imai,T Hibi,J Asai,K Tanida,S H Kim,Y Fukao,H Funahashi,H Okada ,Kenichi Aoki ,S J Kim ,Hajime Takahashi ,C S Yoon ,K Shoji ,Kentaro Yamamoto ,B D Park ,Jung Keun Ahn ,H Sato ,T Yoshida ,Akira Sato ,M Kurosawa ,T Hayakawa ,J Song ,K Miwa ,I G Park ,Y Shimizu ,Bong‐Hyuk Choi ,Kimitaka Nakazawa ,N Saito ,Kaoru Taketani ,M Ieiri ,T Kishimoto ,Akira Ohnishi

doi:10.1142/9789814277860_0020

EXTRACTION OF ΛΛ SCATTERING LENGTH

C J Yoon , M Hayata + Show 33 more

https://doi.org/10.1142/9789814277860_0020

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Publication Date: Oct 1, 2009

Affiliation: Kyoto University, Gifu University, Tokyo University of Science, RIKEN, Gyeongsang National University, Pusan National University, Osaka City University, Osaka University, High Energy Accelerator Research Organization, Hokkaido University

#KEK Proton Synchrotron #Soft Core Models + Show 8 more

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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 and effective range 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.

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