Muon Capture in C12 and Nuclear Structure
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In this article, the effect of the finite size of the nucleus on the muon wave functions is easily taken into account, and an excellent fit to the ex-perimental data for the capture rate as well as for the ft value has been obtained with the B12 wave function proposed by Kurath to explain the magnetic moment of B12 and a C 12 wave function introduced by Cohen and Kurath.Abstract:
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 experimentalft value of B12, 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 ex perimental data for the capture rate as well as for the ft value has been obtained with the B12 wave function proposed by Kurath to explain the magnetic moment of B12 and a C12 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 0 2, 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) uni versality of the V-A interaction in muon capture and beta decay, 2) the validity of the con served vector current theory, and 3) the induced pseudoscalar coupling constant estimated by Goldberger and Treiman.read more
Citations
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Proceedings ArticleDOI
Semi‐leptonic weak interactions in nuclei
TL;DR: In this paper, a general analysis of semi-leptonic weak interactions in nuclei (neutrino reactions, charged lepton capture, and β−decay) is presented in parallel with electron scattering through the electromagnetic interaction.
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Recoil nuclear polarization in muon capture.
TL;DR: In this article, the polarization of recoil nuclei resulting from the absorption of polarized muons is investigated, and it is found that the polarization is insensitive to the nuclear model although the capture rate depends very much on it.
Journal ArticleDOI
Effects of core polarization and exchange currents on the form factors of magnetic transitions in 12C
TL;DR: In this paper, the form factor of the magnetic dipole excitation to the 15.1 MeV, 1 + state in 12 C, taking into account the effects of core polarization and exchange currents, was studied.
Journal ArticleDOI
Average polarization of 12B in polarized muon capture
TL;DR: In this paper, the average polarization of the recoil nucleus in polarized muon capture in a spin zero nucleus is given, including the correction due to contributions from the excited states produced in the muon captures of the same parent nucleus, through γ-transitions.
References
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Journal ArticleDOI
Muon capture in certain light nuclei
A. Fujii,H. Primakoff +1 more
TL;DR: In this article, the rates of the muon capture reactions were calculated assuming universality between muon-bare nucleon and electron-baring nucleon coupling constants and the additional terms arising from the assumption of a conserved vector current.
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Theoretical calculations on μ− +12C →12B + ν
TL;DR: Theoretical calculations of the capture rate and possible observations on the recoiling nucleus have been made for the process μ− + 12C → 12B + ν as discussed by the authors.
Journal ArticleDOI
The ortho-(p Μp) molecule and muon absorption in liquid hydrogen
TL;DR: In this article, the muon absorption rates in atomic and molecular states of hydrogen were calculated taking account of all known effects other than electromagnetic radiative corrections, to an estimated accuracy of one percent, which was found to agree very well with the rate to be expected on the basis of muon-electron equivalence.
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Muon capture in liquid hydrogen a comparison between theory and experiments
H. Ohtsubo,A. Fujii +1 more
TL;DR: In this paper, a precision computation for the atomic and molecular capture rates of the muon in liquid hydrogen is performed for the following dynamical assumptions; i) the universality of the electron and muon weak interactions, ii) time reversal invariance, iii) hypothesis of conserved vector current, iv) asymptotically conserved axial vector current and v) the definiteG-parity of the nucleon weak current.