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Measurement of Σ+p elastic scattering cross sections at KEK-PS

Hiroki Kanda,J. K. Ahn,H. Akikawa,J. Arvieux,B. Bassalleck,M. S. Chung,H. En'yo,Tomokazu Fukuda,H. Funahashi,S. V. Golovkin,A.M. Gorin,Y. Goto,M. Hanabata,T. Hayakawa,A. K. Ichikawa,Masaharu Ieiri,K. Imai,Masaya Ishino,Yongsun Kim,Y. Kondo,E.N. Kozarenko,I. E. Kreslo,J. M. Lee,A. Masaike,Satoshi Mihara,K. Nakai,Kazuma Nakazawa,K. Ozawa,A. Sato,Hirohiko Sato,K. S. Sim,T. Tabaru,Fujio Takeutchi,P. Tlustý,H. Torii,Kazuhiro Yamamoto, S. Yokkaich,Minoru Yoshida

PARTICLES AND NUCLEI: Seventeenth Internatinal Conference on Particles and Nuclei（2006）

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Abstract
An experiment to measure the Σ+p scattering cross sections was carried out at KEK 12 GeV proton synchrotron. A scintillating fiber active target system was used as a hydrogen target for the hyperon production and subsequent hyperon‐nucleon scattering. Out of 1.3 × 10 6 hyperon production events, 31 events were identified as Σ+p elastic scattering events in the momentum region of 350 ⩽ pΣ+ ⩽ 750 MeV/c. Differential cross sections in the angular region of −0.8 < cosθCM < 0.8 and integrated cross sections with respect to the incident momentum were obtained. They were compared with the theoretical calculations.
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Key words
scattering,cross sections,elastic
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