| Autor: |
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 |
| Rok vydání: |
2021 |
| Zdroj: |
Physical review letters. 128(7) |
| ISSN: |
1079-7114 |
| Popis: |
The differential cross sections of the Σ^{-}p→Λn reaction were measured accurately for the Σ^{-} momentum (p_{Σ}) 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 470p_{Σ}(MeV/c)550 and 550p_{Σ}(MeV/c)650, respectively. These results show a drastic improvement compared with past measurements of the hyperon-proton scattering experiments. They will play essential roles in updating the theoretical models of the baryon-baryon interactions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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