Muon Capture in C^<12> and Nuclear Structure

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概要

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• We have calculated the muon capture rate for C^<12>+μ^-→B^<12>(ground state)+ν, using general p-shell wave functions which were obtained by considering the dynamical properties in the A=12 system. Our theoretical formula for the capture rate is of such a form that the effect of the finite size of the nucleus on the muon wave functions is easily taken into account. The experimental ft value of B^<12>, which in all previous theories is used to normalize the muon capture rate, has not been adopted in our analysis. An excellent fit to the experimental data for the capture rate as well as for the ft value has been obtained with the B^<12> wave function proposed by Kurath to explain the magnetic moment of B^<12> and a C^<12> wave function introduced by us. These wave functions have slightly different values of configuration mixing parameters from those originally given by Cohen and Kurath. The value for the oscillator strength parameter which we use is b=1.64 f; this is in conformity with the elastic and most of the inelastic electron scattering data. On the other hand, should b be taken as 1.90 f, the value derived from the analysis of the inelastic electron scattering data associated with the 15.1 MeV level in C^<12>, it is relatively difficult to have a simultaneous fit to the data for the capture rate and the ft value. Our results are based on the assumptions of 1) universality of the V-A interaction in muon capture and beta decay, 2) the validity of the conserved vector current theory, and 3) the induced pseudoscalar coupling constant estimated by Goldberger and Treiman.

• 理論物理学刊行会の論文
• 1968-10-25

著者

• Morita Masato

  Department Of Anesthesiology And Medical Crisis Management Nagoya City University Graduate School Of

• Narumi Hajime

  Department of Physics, Hiroshima University

• KONISHI Teruaki

  Department of Life Science, Rikkyo University

• Narumi Hajime

  Department Of Physics Faculty Of Science Hiroshima University

• Soga Michitoshi

  Department Of Physics The Tokyo Institute Of Technology. Ohokayama

• Soga Michitoshi

  Department Of Physics Tokyo Institute Of Technology

• Konishi Teruaki

  Department Of Physics Hiroshima University

• HIROOKA Masahiko

  Department of Physics, Osaka University

• Hirooka Masahiko

  Department Of Physics College Of General Education Osaka University

• KONISHI Teruaki

  Department of Physics, Hiroshima University

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