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arXiv · 2104.13608

Measurement of the differential cross sections of the Sigma-p elastic scattering in momentum range of 470 to 850 MeV/c

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
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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 $\pi^{-}p \to K^{+}\Sigma^{-}$ 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 $\times$ $10^{7}$ $\Sigma^{-}$. 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.

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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. 2021-04-28. Measurement of the differential cross sections of the Sigma-p elastic scattering in momentum range of 470 to 850 MeV/c. https://arxiv.org/abs/2104.13608

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