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The and couplings in QCD
Shi-Lin Zhu
The light cone QCD sum rules are derived for the coupling and the coupling . The contribution from the excited states and the continuum…
The strong coupling derived from QCD
Shi-Lin Zhu
We study the two point correlation function of two nucleon currents sandwiched between the vacuum and the rho meson state. The light cone QCD sum rules are derived both for v…
The couplings derived from QCD sum rules
Shi-Lin Zhu
The light cone QCD sum rules are derived for vector and tensor couplings simultaneously. The vacuum gluon field contribution is taken into account. Our results are $g_ω=(18\p…
The and couplings in QCD
Shi-Lin Zhu, W. -Y. P. Hwang, Yuan-Ben Dai
The light cone QCD sum rules are derived for the coupling and coupling . The contribution from the excited states and continuum is subtrac…
Electromagnetic decays of vector mesons as derived from QCD sum rules
Shi-lin Zhu, W. -Y. P. Hwang, Ze-sen Yang
We apply the method of QCD sum rules in the presence of external electromagnetic fields to the problem of the electromagnetic decays of various vector mesons, such as $ρ\t…
An improvement on RPA based on a Boson mapping
Shi-Lin Zhu, Zhi-ning Zhou, Ze-sen Yang
We use a solvable model to perform modified dyson mapping and reveal the unphysical-state effects in the original Random Phase Approximation (RPA). We then propose a method to intr…