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6 papers · 2 filters
The massive analytic invariant charge in QCD
A. V. Nesterenko, J. Papavassiliou
The low energy behavior of a recently proposed model for the massive analytic running coupling of QCD is studied. This running coupling has no unphysical singularities, and in the…
The QCD analytic running coupling and chiral symmetry breaking
A. V. Nesterenko, J. Papavassiliou
We study the dependence on the pion mass of the QCD effective charge by employing the dispersion relations for the Adler D function. This new massive analytic running coupling is c…
The QCD analytic effective charge and its dependence on the pion mass
A. V. Nesterenko, J. Papavassiliou
A new model for the QCD analytic running coupling, which incorporates the effects due to the meson mass, is proposed. The properties of this invariant charge in spacelike and t…
Pentaquark from QCD sum rules: consequences of the diquark approach
Markus Eidemuller
In this work we investigate the consequences of the Jaffe and Wilczek diquark model in the framework of QCD sum rules. An analysis of the Theta^+(1540) as (ud)^2\bar{s} state shows…
Neutrino Masses and GUT Baryogenesis
J. A. Lopez-Perez, N. Rius
We reconsider the GUT-baryogenesis mechanism for generating the baryon asymmetry of the Universe. The baryon asymmetry is produced by the out of equilibrium decay of coloured Higgs…
CP sensitive observables in e+e- -> neutralino_i neutralino_j and neutralino decay into the Z boson
A. Bartl, H. Fraas, O. Kittel +1
We study CP sensitive observables in neutralino production e+e- -> neutralino_i neutralino_j and the subsequent two-body decays of the neutralino neutralino_i -> neutralino_n Z and…