Search for Cosmic Ray Quarks at Large Zenith Angles

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概要

• 論文の詳細を見る

• Fractionally charged particles (quarks) have been looked for in cosmic rays at sea level. The detection system consists of six layers of scintillation counter hodoscopes, and is directed to large zenith angles so that quarks are detected isolated from air showers due to their interactions with the thick atmospheric layer. The total acceptance of the present measurement amounts to 1.1×10^<10> cm^2sr sec. The upper flux limit of 3×10^<-10> cm^<-2>sr^<-1> sec^<-1> is obtained for e/3 quarks at large zenith angles. From this flux limit, a lower limit of the quark mass is estimated to be about 20 GeV/c^2.

• 社団法人日本物理学会の論文
• 1974-03-15

著者

• KIFUNE Tadashi

  Institute for Cosmic Ray Research,University of Tokyo

• TSUNEMOTO Kenji

  Department of Physics, University of Tokyo

• Kifune Tadashi

  Institute Of Space And Aeronautical Science The University Of Tokyo

• Kimura Yoshitaka

  National Laboratory For High Energy Physics

• HIEDA Yasuo

  Department of Physics, The University of Tokyo

• KUROKAWA Shinichi

  Department of Physics, The University of Tokyo

• NISHIKAWA Tetsuji

  National Laboratory for High Energy Physics

• Hieda Yasuo

  Department Of Physics The University Of Tokyo

• Kifune Tadashi

  Institute For Cosmic Ray Research University Of Tokyo

• Tsunemoto Kenji

  Department Of Physics The University Of Tokyo

• Kurokawa Shinichi

  Department Of Physics The University Of Tokyo

• Nishikawa Tetsuji

  Department Of Physics Faculty Of Science University Of Tokyo:(prsent Address) National Laboratory Fo

• Nishikawa Tetsuji

  Department Of Physics Faculty Of Science University Of Tokyo

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