Multi-nucleon transfer in 58Ni+60Ni{}^{58}\text{Ni}+{}^{60}\text{Ni} and 60Ni+60Ni{}^{60} \text{Ni}+{}^{60}\text{Ni} in stochastic mean-field approach

The multi-nucleon exchange mechanism in ${}^{58} \text{Ni}+{}^{60} \text{Ni}$ and ${}^{60} \text{Ni}+{}^{60}\text{Ni}$ collisions is analyzed in the framework of the stochastic mean-field approach. The results of calculations are compared with the TDRPA calculations and the recent data of ${}^{58} \text{Ni}+{}^{60} \text{Ni}$. A good description of the data and a relatively good agreement with the TDRPA calculations are found.Comment: 6 pages, 6 figure

The coupling constants g_{\rho\pi\gamma} and g_{\omega\pi\gamma} as derived from QCD sum rules}

We employ QCD sum rules to calculate the coupling constants g$_{\rho\pi\gamma}$ and g$_{\omega\pi\gamma}$ by studying the three point ${\rho\pi\gamma}$- and ${\omega\pi\gamma}$-correlation functions. Our results for the decay widths $\Gamma(\rho^0\to \pi^0\gamma)$ and $\Gamma(\omega\to \pi^0\gamma)$ calculated using the obtained coupling constants are in good agreement with the experimental values of these decay widths

The ωσγ\omega\sigma\gamma-vertex in light cone QCD sum rules

We investigate the $\omega\sigma\gamma$-vertex and estimate the coupling constant g$_{\omega\sigma\gamma}$ in the framework of the light cone QCD sum rules. We compare our result with the values of this coupling constant deduced from a phenomenological analysis of $\omega\to\pi\pi\gamma$ decays.Comment: 5 pages, RevTex, 1 Figur

The ϕa0γ\phi a_0\gamma- and ϕσγ\phi\sigma\gamma-vertices in light cone QCD

We study $\phi a_0\gamma$- and $\phi\sigma\gamma$-vertices in the framework of the light cone QCD sum rules and we estimate the coupling constants g$_{\phi a_0\gamma}$ and g$_{\phi\sigma\gamma}$ utilizing $\omega\phi$-mixing. We compare our results with the previous estimations of these coupling constants in the literature obtained from phenomenological considerations.Comment: 8 pages, RevTex, 2 figure

The a0K+K−a_0K^+K^--vertex in light cone QCD sum rules

We investigate the $a_0K^+K^-$-vertex in the framework of light cone QCD sum rules. We estimate the coupling constant g$_{a_0K^+K^-}$ which is an essential ingredient in the analysis of physical processes involving $a_0(980)$ meson. Our result is somewhat larger than the previous determinations of this coupling constant.Comment: 8 pages, 1 figur

The decay ρ0→π0π0γ\rho^{0}\to \pi^{0}\pi^{0}\gamma and the role of σ\sigma-meson

We study the radiative decay $\rho^{0}\to\pi^{0}\pi^{0}\gamma$ within the framework of a phenomenological approach in which the contributions of $\sigma$-meson and $\omega$-meson intermediate states and of the pion-loops are considered. We conclude that the $\sigma$-meson amplitude provides the dominant contribution.Comment: 12 pages, LATEX, 3 PS figure

Global analysis of solar neutrinos (assumed to be Majorana particles) together with the new KamLAND data

Assuming neutrinos are Majorana particles having non-zero transition magnetic moments, a global analysis of solar neutrino data, together with the new KamLAND data, is presented in the resonant spin flavor precession (RSFP) framework. The allowed regions from solar data combined with new KamLAND data are examined at 0.95 confidence level (CL). The electron antineutrino flux from the Sun is calculated, and via the results obtained several limits are set for muB.Comment: 13 pages, 6 figure