?n scattering length from ? photoproduction on the proton near the threshold

T. Ishikawa, H. Fujimura, H. Fukasawa, R. Hashimoto, Q. He, Y. Honda, A. Hosaka, T. Iwata, S. Kaida, J. Kasagi, A. Kawano, S. Kuwasaki, K. Maeda, S. Masumoto, M. Miyabe, F. Miyahara, K. Mochizuki, N. Muramatsu, A. Nakamura, S. X. NakamuraK. Nawa, S. Ogushi, Y. Okada, K. Okamura, Y. Onodera, K. Ozawa, Y. Sakamoto, M. Sato, T. Sato, Hajime Shimizu, Hiroyuki Sugai, K. Suzuki, Y. Tajima, S. Takahashi, Y. Taniguchi, Y. Tsuchikawa, Hirohito Yamazaki, R. Yamazaki, H. Y. Yoshida

研究成果: Conference contribution

抄録

Photoproduction of the ? meson on the proton has been experimentally studied near the threshold. The total cross sections are determined at incident energies ranging from 1.09 to 1.15 GeV. The 1/2 and 3/2 spin-averaged scattering length a?p and effective range r?p between the ? meson and proton are estimated from the shape of the total cross section as a function of the incident photon energy: a?p=(-0.97±0.16)+ i (0.07±0.15) fm and r?p=(+2.78±0.61)+ i (-0.01±0.48) fm, which suggests a repulsive force. The real and imaginary parts for a?p and r?p are determined separately for the first time. The details of the analysis and discussions are described in Ref. [1].

本文言語English
ホスト出版物のタイトルProceedings of the 14th Asia Pacific Physics Conference
編集者Teck-Yong Tou, Jun'ichi Yokoyama, Roslan Abdul Shukor, Kazuhiro Tanaka, Hyoung Joon Choi, Ryoji Matsumoto, Oi-Hoong Chin, Jia Hou Chin, Kuru Ratnavelu
出版社American Institute of Physics Inc.
ISBN(電子版)9780735440630
DOI
出版ステータスPublished - 2021 2 5
イベント14th Asia Pacific Physics Conference, APPC 2019 - Kuching, Sarawak, Malaysia
継続期間: 2019 11 172019 11 22

出版物シリーズ

名前AIP Conference Proceedings
2319
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Conference

Conference14th Asia Pacific Physics Conference, APPC 2019
国/地域Malaysia
CityKuching, Sarawak
Period19/11/1719/11/22

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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