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Precise Measurement of Differential Cross Sections of the Sigma(- )p -> Lambda n Reaction in Momentum Range 470-650 MeV/c
- Authors
- 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.; Takahashi, T. N.; Tamura, H.; Tanaka, M.; Tanida, K.; Tsamalaidze, Z.; Ukai, M.; Umetsu, H.; Wada, S.; Yamamoto, T. O.; Yoshida, J.; Yoshimura, K.
- Issue Date
- 15-2월-2022
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.128, no.7
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 128
- Number
- 7
- ISSN
- 0031-9007
- Abstract
- The differential cross sections of the Sigma(-) p -> Lambda n reaction were measured accurately for the Sigma(-)momentum (p(Sigma)) ranging from 470 to 650 MeV/c at the J-PARC Hadron Experimental Facility. Precise angular information about the Sigma(-) p -> Lambda n reaction was obtained for the first time by detecting approximately 100 reaction events at each angular step of Delta cos theta = 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 <= cos theta <= 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 < p(Sigma)(MeV/c) < 550 and 550 < p(Sigma)(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.
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