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27 April 2024

» arxiv » 2104.13608

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Measurement of the differential cross sections of the Sigma-p elastic scattering in momentum range 470 to 850 MeV/c
J-PARC E40 Collaboration ; K. Miwa ; J. K. Ahn ; Y. Akazawa ; T. Aramaki ; S. Ashikaga ; S. Callier ; N. Chiga ; S. W. Choi ; H. Ekawa ; P. Evtoukhovitch ; N. Fujioka ; M. Fujita ; T. Gogami ; T. Harada ; S. Hasegawa ; S. H. Hayakawa ; R. Honda ; S. Hoshino ; K. Hosomi ; M. Ichikawa ; Y. Ichikawa ; M. Ieiri ; M. Ikeda ; K. Imai ; Y. Ishikawa ; S. Ishimoto ; W. S. Jung ; S. Kajikawa ; H. Kanauchi ; H. Kanda ; T. Kitaoka ; B. M. Kang ; H. Kawai ; S. H. Kim ; K. Kobayashi ; T. Koike ; K. Matsuda ; Y. Matsumoto ; S. Nagao ; R. Nagatomi ; Y. Nakada ; M. Nakagawa ; I. Nakamura ; T. Nanamura ; M. Naruki ; S. Ozawa ; L. Raux ; T. G. Rogers ; A. Sakaguchi ; T. Sakao ; H. Sako ; S. Sato ; T. Shiozaki ; K. Shirotori ; K. N. Suzuki ; S. Suzuki ; M. Tabata ; C. d. L. Taille ; H. Takahashi ; T. Takahashi ; T. N. Takahashi ; H. Tamura ; M. Tanaka ; K. Tanida ; Z. Tsamalaidze ; M. Ukai ; H. Umetsu ; S. Wada ; T. O. Yamamoto ; J. Yoshida ; K. Yoshimura ;
Date:	28 Apr 2021
Abstract:	A high statistics $Sigma p$ scattering experiment has been performed at the J-PARC Hadron Experimental Facility. Data for momentum-tagged $Sigma^{-}$ running in a liquid hydrogen target were accumulated by detecting the $pi^{-}p o K^{+}Sigma^{-}$ reaction with a high intensity $pi^{-}$ beam of 20 M/spill. Differential cross sections of the $Sigma^{-}p$ elastic scattering were derived with a drastically improved accuracy by identifying the largest statistics of about 4,500 events from 1.72 $ imes$ $10^{7}$ $Sigma^{-}$. The derived differential cross section shows a clear forward-peaking angular distribution for a $Sigma^{-}$ momentum range from 470 to 850 MeV/$c$. The accurate data will impose a strong constraint on the theoretical models of the baryon-baryon interactions.
Source:	arXiv, 2104.13608
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