Precise measurement of differential cross sections of the $\Sigma^-p \to \Lambda n$ reaction in momentum range 470-650 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.
- Taille, C.D.L.
- 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.
DOIAbstract
International audienceThe differential cross sections of the Σ-p→Λn reaction were measured accurately for the Σ- momentum (pΣ) ranging from 470 to 650 MeV/c at the J-PARC Hadron Experimental Facility. Precise angular information about the Σ-p→Λn reaction was obtained for the first time by detecting approximately 100 reaction events at each angular step of Δcosθ=0.1. The obtained differential cross sections show a slightly forward-peaking structure in the measured momentum regions. The cross sections integrated for -0.7≤cosθ≤1.0 were obtained as 22.5±0.68 [statistical error(stat.)] ±0.65 [systematic error(syst.)] mb and 15.8±0.83(stat)±0.52(syst) mb for 470<pΣ(MeV/c)<550 and 550<pΣ(MeV/c)<650, respectively. These results show a...
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