Non-strange dibaryons studied in coherent double neutral-meson photoproduction on the deuteron

T. Ishikawa, H. Fujimura, H. Fukasawa, R. Hashimoto, Q. He, Y. Honda, T. Iwata, S. Kaida, Hiroki Kanda, J. Kasagi, A. Kawano, S. Kuwasaki, K. Maeda, S. Masumoto, M. Miyabe, F. Miyahara, K. Mochizuki, N. Muramatsu, A. Nakamura, K. NawaS. Ogushi, Y. Okada, Y. Onodera, K. Ozawa, Y. Sakamoto, M. 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: Article査読

2 被引用数 (Scopus)

抄録

We have investigated the γd → π0π0d reaction to study dibaryon resonances. The total cross section as a function of the γd center-of-mass energy shows resonance-like behavior peaked at around 2.47 and 2.63 GeV. The measured angular distribution of deuteron emission is rather flat, which cannot be reproduced by kinematics for quasi-free π0π0 production with deuteron coalescence. A clear peak is observed at 2.14 GeV in the π0d invariant-mass distributions. The present work shows a sequential process γd → RIS → π0RIV → π0π0d is dominant with two 2.47- and 2.63-GeV isoscalar dibaryons (RIS) and a 2.14-GeV isovector dibaryon (RIV).

本文言語English
ページ(範囲)329-332
ページ数4
ジャーナルActa Physica Polonica B
51
1
DOI
出版ステータスPublished - 2020

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「Non-strange dibaryons studied in coherent double neutral-meson photoproduction on the deuteron」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル