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  • 1980-1984  (4)
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Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Correct treatment of the N*(1236) propagator in the N*-excitation current (1980)
    Springer
    Czechoslovak journal of physics 30 (1980), S. 51-55 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract For the reaction μ−+d→2n+vμ is shown that the momentum dependence of the N*(1236) propagator in the N*-excitation current of the pion range could he neglected only for the square of the effective mass M2 ≈ 10(M *2−M2).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01601864
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Isovector electromagnetic exchange currents in the chiral approach (1984)
    Springer
    Czechoslovak journal of physics 34 (1984), S. 1157-1178 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary The problem studied in the paper concerns the structure of the isovector e.m. MEC operators of the A1−, ϱ- and π ranges in the interval of intermediate energies. The two main dynamic principles which we invoke in our considerations are the current conservation and the gauge chiral invariance. Respecting them consistently allows us to describe correctly the interaction of NA1 ϱπ system with the external e.m. field. Our main results are as follows: (i) We verified that our Lagrangian approach is consistent with the prediction of the low energy theorem at threshold. (ii) We showed explicitly the continuity equation which the longitudinal parts of our currents obey. (iii) We proved the equivalence relation for the MEC operator of the pion range and demonstrated the existence of the seagull current in the MEC operator built up using PS πN coupling. This new term influences strongly the exchange charge density. In our approach, the vector dominance Dirac e.m. form factors appear naturally in formulae for MEC operators. However, any other choice of parametrization (e.g. dipole form factors) is possible for computational purposes and it does not result in any alteration of our formulae and conclusions. Also, the continuity equation does not change when putting form factors FBNN(q2) into the BNN vertices (B = = π. ϱ. A1) of the MEC operators and OBE potentials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01590064
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Axial meson exchange current effects in deuterium in the current algebra approximation (1983)
    Springer
    Czechoslovak journal of physics 33 (1983), S. 558-567 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01589794
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Editors' foreword (1982)
    Springer
    Czechoslovak journal of physics 32 (1982), S. 121-125 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01608037
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    Paper (German National Licenses)
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