MISC

2008年9月

Photoproduction of Lambda(1405) and Sigma(0)(1385) on the proton at E-gamma=1.5-2.4 GeV

PHYSICAL REVIEW C
  • M. Niiyama
  • H. Fujimura
  • D. S. Ahn
  • J. K. Ahn
  • S. Ajimura
  • H. C. Bhang
  • T. H. Chang
  • W. C. Chang
  • J. Y. Chen
  • S. Date
  • S. Fukui
  • H. Funahashi
  • K. Hicks
  • K. Horie
  • T. Hotta
  • K. Imai
  • T. Ishikawa
  • Y. Kato
  • K. Kino
  • H. Kohri
  • S. Makino
  • T. Matsumura
  • T. Mibe
  • K. Miwa
  • M. Miyabe
  • N. Muramatsu
  • M. Nakamura
  • T. Nakano
  • Y. Nakatsugawa
  • Y. Ohashi
  • D. S. Oshuev
  • J. D. Parker
  • N. Saito
  • T. Sawada
  • Y. Sugaya
  • M. Sumihama
  • J. L. Tang
  • M. Uchida
  • C. W. Wang
  • T. Yorita
  • M. Yosoi
  • 全て表示

78
3
記述言語
英語
掲載種別
DOI
10.1103/PhysRevC.78.035202
出版者・発行元
AMER PHYSICAL SOC

Differential cross sections for gamma p -> K+ Lambda (1405) and gamma p -> K+ Sigma(0) (1385) reactions have been measured in the photon energy range from 1.5 to 2.4 GeV and the angular range of 0.8 < cos(Theta) < 1.0 for the K+ scattering angle in the center-of-mass system. This data is the first measurement of the Lambda (1405) photoproduction cross section. The line shapes of Lambda (1405) measured in Sigma(+) pi(-) and Sigma(-) pi(+) decay modes were different with each other, indicating a strong interference of the isospin 0 and 1 terms of the Sigma pi scattering amplitudes. The ratios of Lambda (1405) production to Sigma(0) (1385) production were measured in two photon energy ranges: near the production threshold (1.5 < E-gamma < 2.0 GeV) and far from it ( 2.0 < E. < 2.4 GeV). The observed ratio decreased in the higher photon energy region, which may suggest different production mechanisms and internal structures for these hyperon resonances.

リンク情報
DOI
https://doi.org/10.1103/PhysRevC.78.035202
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000259692300068&DestApp=WOS_CPL
ID情報
  • DOI : 10.1103/PhysRevC.78.035202
  • ISSN : 2469-9985
  • eISSN : 2469-9993
  • Web of Science ID : WOS:000259692300068

エクスポート
BibTeX RIS