Measurement of differential cross sections for Σ+ p elastic scattering in the momentum range 0.44–0.80 GeV/c

T. Nanamura, 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. K. Harada, S. Hasegawa, S. H. Hayakawa, R. Honda, S. Hoshino, K. HosomiM. 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, 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

研究成果: ジャーナルへの寄稿学術論文査読

11 被引用数 (Scopus)

抄録

We performed a novel ∑+p scattering experiment at the J-PARC Hadron Experimental Facility. Approximately 2400 ∑+p elastic scattering events were identified from 4.9 × 107 tagged ∑+ particles in the ∑+ momentum range 0.44–0.80 GeV/c. The differential cross sections of the ∑+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.

本文言語英語
論文番号093D01
ジャーナルProgress of Theoretical and Experimental Physics
2022
9
DOI
出版ステータス出版済み - 2022 9月 1

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