283 research outputs found
Pi2-pulsations, aurora oval and plasma density in the magnetosphere
Geomagnetic pulsations Pi2, aurora oval, and plasma density in magnetospher
On the D-wave state component of the deuteron in the Nambu-Jona-Lasinio model of light nuclei
The D-wave state component of the neutron-proton bound state in the deuteron
is calculated in the Nambu-Jona-Lasinio model of light nuclei - the
relativistically covariant quantum field theoretic approach to the description
of low-energy nuclear forces. The theoretical value of the fraction of the
D-wave state relative to the S-wave state is equal to eta_d = 0.0238. This
agrees well with the phenomenological value eta_d = 0.0256(4) quoted by
Kamionkowski and Bahcall (ApJ. 420, 884 (1994)).Comment: 7 pages, latex, no figure
Investigation of type-pi 2 geomagnetic pulsations at magnetoconjugate points
Type pi2 geomagnetic pulsations and Alfven wave resonance on night side of magnetospher
On the reactions p + p -> p + Lambda + K^+ and p + p -> p + Sigma^0 + K^+ near thresholds
The cross sections for the reactions of the strange production p + p -> p +
Lambda + K^+ and p + p -> p + Sigma^0 + K^+ near thresholds of the final states
p Lambda K^+ and p Sigma^0 K^+ are calculated in the effective Lagrangian
approach. Our approach is based on the dominant contribution of the one-pion
exchange and strong interaction of the colliding protons in the initial state.
The theoretical values of the cross sections agree reasonably well with the
experimental data. The polarization properties of the Lambda and Sigma^0
hyperons are discussed.Comment: 15 pages, 1 Postscript figure, Latex, to appear in Eur. Phys. J
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