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大学・研究所にある論文を検索できる 「Measurement of differential cross sections for Σ⁺p elastic scattering in the momentum range 0.44–0.80 GeV/c」の論文概要。リケラボ論文検索は、全国の大学リポジトリにある学位論文・教授論文を一括検索できる論文検索サービスです。
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Measurement of differential cross sections for Σ⁺p elastic scattering in the momentum range 0.44–0.80 GeV/c

Nanamura, T 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 K 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 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 京都大学 DOI:10.1093/ptep/ptac101

2022.09

概要

We performed a novel Σ⁺+p scattering experiment at the J-PARC Hadron Experimental Facility. Approximately 2400 Σ⁺+p elastic scattering events were identified from 4.9 × 10⁷ tagged Σ⁺+ particles in the Σ⁺+ momentum range 0.44-0.80 GeV/c. The differential cross sections of the Σ⁺+p elastic scattering were derived with much better precision than in previous experiments. The obtained differential cross sections were approximately 2 mb/sr or less, which were not as large as those predicted by the fss2 and FSS models based on the quark cluster model in the short-range region. By performing phase-shift analyses for the obtained differential cross sections, we experimentally derived the phase shifts of the ³S₁ and ¹P₁ channels for the first time. The phase shift of the ³S₁ channel, where a large repulsive core was predicted owing to the Pauli effect between quarks, was evaluated as 20° < |δ₃S₁| < 35°. If the sign of δ₃S₁ is assumed to be negative, the interaction in this channel is moderately repulsive, as the Nijmegen extended-sort-core models predicted.

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