Measurement of the differential cross sections of the $\Sigma^-p$ elastic scattering in momentum range 470 to 850 MeV/c
- Miwa, K.
- Ahn, J.K.
- Akazawa, Y.
- Aramaki, T.
- Ashikaga, S.
- Callier, S.
- Chiga, N.
- Choi, S.W.
- Ekawa, H.
- Evtoukhovitch, P.
- Fujioka, N.
- Fujita, M.
- Gogami, T.
- Harada, T.
- Hasegawa, S.
- Hayakawa, S.H.
- Honda, R.
- Hoshino, S.
- Hosomi, K.
- Ichikawa, M.
- Ichikawa, Y.
- Ieiri, M.
- Ikeda, M.
- Imai, K.
- Ishikawa, Y.
- Ishimoto, S.
- Jung, W.S.
- Kajikawa, S.
- Kanauchi, H.
- Kanda, H.
- Kitaoka, T.
- Kang, B.M.
- Kawai, H.
- Kim, S.H.
- Kobayashi, K.
- Koike, T.
- Matsuda, K.
- Matsumoto, Y.
- Nagao, S.
- Nagatomi, R.
- Nakada, Y.
- Nakagawa, M.
- Nakamura, I.
- Nanamura, T.
- Naruki, M.
- Ozawa, S.
- Raux, L.
- Rogers, T.G.
- Sakaguchi, A.
- Sakao, T.
- Sako, H.
- Sato, S.
- Shiozaki, T.
- Shirotori, K.
- Suzuki, K.N.
- Suzuki, S.
- Tabata, M.
- de La Taille, C.
- Takahashi, H.
- Takahashi, T.N.
- Tamura, H.
- Tanaka, M.
- Tanida, K.
- Tsamalaidze, Z.
- Ukai, M.
- Umetsu, H.
- Wada, S.
- Yamamoto, T.O.
- Yoshida, J.
- Yoshimura, K.
Publication date
January 2021
DOI Publisher
American Physical Society (APS)Abstract
International audienceA high statistics Σp scattering experiment is performed at the J-PARC Hadron Experimental Facility. Momentum-tagged Σ−s running in a liquid hydrogen target are accumulated by detecting the π−p→K+Σ− reaction with a high intensity π− beam of 20 M/spill. The differential cross sections of the Σ−p elastic scattering were derived with a drastically improved accuracy by identifying approximately 4500 events from 1.72×107Σ−. The derived differential cross section shows a clear forward-peaking angular distribution for a Σ− 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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