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TURE PUBLICATIONS
DOI: 10.1134/S1063778806110251
QCD Sum Rules for the Coupling Constants gKY N and g KY Ξ ¨ T. Aliev, V. S. Zamiralov, S. N. Lepshokov, A. Ozpineci, and S. B. Yakovlev
New relations between the Borel QCD sum rules for strong kaon–baryon couplings are obtained. It is shown that the sum rules for the coupling constants gKY N and gKY Ξ , where Y = Σ, Λ, can be immediately derived from the sum rules for the coupling constants gπΣΣ and gπΣΛ . The coupling constants are calculated for a Borel window 1.0 ≤ M 2 ≤ 1.4 GeV2 at t = −1.
Mechanism of Independent Neutron Exchange in Elastic α6 He Scattering and Structure of the 6 He Nuclear Wave Function L. I. Galanina and N. S. Zelenskaya
It is predicted that the wave function for the neutron-rich 6 He nucleus involves two topologically different configurations: dineutron and cigar-shaped. The dineutron configuration gives rise to a backward peak of the cross section for elastic α6 He scattering. The scattering mechanism involving independent sequential neutron exchange and leading to the formation of a virtual 5 He–5 He system is associated with the cigarshaped configuration. To estimate the contribution of this mechanism, the matrix element for the two-step sequential exchange of particles is calculated by using the QUADRO package with allowance for delay of the interaction. The weight of the cigar-shaped configuration in the 6 He wave function is estimated on the basis of these calculations.
Screening of a Color Field in an Instanton Liquid G. M. Zinovjev and S. V. Molodtsov
The screening of an external color field in an instanton liquid is studied. In the long-wave approximation, effective Lagrangians are derived for both weak and strong fields. The coupling-constant dependence of the effect of the field on the instanton liquid is estimated by considering the problem of a color charged Euclidean source.
Elastic 16 O16 O Scattering at E(16 O)) = 350 MeV and New Method for a Model-Independent Determination of the Scattering Matrix V. Yu. Korda, A. S. Molev, and L. P. Korda
On the basis of the evolution algorithm, a new approach is developed that makes it possible to determine the scattering matrix S(l) as a complex function of the orbital angular momentum l immediately from experimental data on elastic nucleus–nucleus scattering at intermediate energies without invoking additional model assumptions. Since the behavior of the derivatives of S(l) is automatically monitored, the resulting scattering matrix for 16 O16 O collisions at an energy of 350 MeV is determined by the absolute value and the nuclear phase shift, which are smooth monotonic functions of the orbital angular momentum, and involves no distortions, the shape of the quantum deflection function being typical of the nuclear rainbow pattern. It is shown that the resulting shape of S(l) is independent of the input representations of the scattering matrix, which are usually taken on the basis of various phenomenological models.
1975
1976
FUTURE PUBLICATIONS
Analysis of Elastic and Inelastic Scattering
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