論文

査読有り 本文へのリンクあり
2020年

Ηn scattering parameters and possible η0d bound state from η photoproduction on the deuteron

Acta Physica Polonica B
  • T. Ishikawa
  • K. Aoki
  • H. Fujimura
  • H. Fukasawa
  • H. Fujioka
  • R. Hashimoto
  • Q. He
  • Y. Honda
  • T. Hotta
  • Y. Inoue
  • K. Itahashi
  • T. Iwata
  • S. Kaida
  • H. Kanda
  • J. Kasagi
  • A. Kawano
  • S. Kusawaki
  • H. Kawai
  • K. Maeda
  • S. Masumoto
  • Y. Matsumura
  • M. Miyabe
  • F. Miyahara
  • K. Mochizuki
  • S. Miyata
  • N. Muramatsu
  • A. Nakamura
  • K. Nawa
  • T. Nishi
  • S. Ohgushi
  • Y. Okada
  • H. Ohnishi
  • Y. Onodera
  • K. Ozawa
  • Y. Sakamoto
  • M. Sato
  • H. Shimizu
  • H. Sugai
  • K. Suzuki
  • R. Shirai
  • M. Tabata
  • Y. Tajima
  • S. Takahashi
  • Y. Taniguchi
  • A. O. Tokiyasu
  • Y. Tsuchikawa
  • H. Yamazaki
  • R. Yamazaki
  • C. Yoshida
  • H. Y. Yoshida
  • 全て表示

51
1
開始ページ
27
終了ページ
32
記述言語
掲載種別
研究論文(国際会議プロシーディングス)
DOI
10.5506/APhysPolB.51.27

Two physics programs, determination of low-energy scattering parameters between the eta meson (η) and nucleon (N), and search for a possible bound state between the eta prime meson (η0) and deuteron, using η photoproduction from the deuteron target are conducted at the Research Center for Electron Photon Science (ELPH), Tohoku University. Among the two-body dynamics of the meson–nucleon systems, the ηN interaction is not well-known although it has been found attractive. An experiment is carried out to determine the low-energy ηN scattering parameters using a special kinematics. The energy and momentum of the emitted proton (p) are measured at 0 degrees for η photoproduction on the deuteron (d) at incident energies around 0.94 GeV, which gives the low relative momentum between η and neutron (n) in the final state. Low-energy ηn scattering is likely to take place in this condition, and the scattering parameters can be determined from the differential cross section as a function of the ηn invariant mass. The measurement is currently in progress to determine the real part of the ηn scattering length. A possible η0d bound state is theoretically predicted, and a structure corresponding to the state can be observed via the γd → ηd reaction at incident energies around 1.2 GeV. In the case of backward η emission, the structure becomes prominent because a background contribution coming from quasi-free single-step η emission is highly suppressed. The γd → ηd reaction has been also studied at ELPH below the incident energy of 1.15 GeV. The angular differential cross sections are determined at backward η emission angles. The tail of the corresponding peak is not observed, and the background level is much higher than predicted.

リンク情報
DOI
https://doi.org/10.5506/APhysPolB.51.27
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85078571498&origin=inward 本文へのリンクあり
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ID情報
  • DOI : 10.5506/APhysPolB.51.27
  • ISSN : 0587-4254
  • eISSN : 1509-5770
  • SCOPUS ID : 85078571498

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