EXTRACTION OF ΛΛ SCATTERING LENGTH

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

doi:10.1142/s0218301310016934

EXTRACTION OF ΛΛ SCATTERING LENGTH

C J Yoon , Y Fukao + Show 33 more

https://doi.org/10.1142/s0218301310016934

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Journal: International Journal of Modern Physics E

Publication Date: Dec 1, 2010

Affiliation: Johannes Gutenberg University Mainz, Kyoto University, Gifu University, Tokyo University of Science, Osaka Electro-Communication University, Chonnam National University Hospital, Gyeongsang National University, Osaka University, Pusan National University, High Energy Accelerator Research Organization, Osaka City University, University of Fukui, 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 12 C (K-, K+ΛΛ) reaction at the KEK Proton Synchrotron. In the framework of Watson's procedure, the obtained scattering length [Formula: see text] and effective range [Formula: see text] 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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