GPDs from charged current meson production in epep experiments

We suggest that generalized parton distributions can be probed in charged current meson production process, $ep\to\nu_{e}\pi^{-}p$. In contrast to pion photoproduction, this process is sensitive to the unpolarized GPDs $H,\,E$, and for this reason has a very small contamination by higher twist and Bethe-Heitler type contributions. Since all produced hadrons are charged, we expect that the kinematics of this process could be easily reconstructed. We estimated the cross-sections in the kinematics of upgraded 12 GeV Jefferson Laboratory experiments and found that thanks to large luminosity the process can be measured with reasonable statistics.Comment: 15 pages, 7 figures. Extension of the approach developed in arXiv:1210.4825, arXiv:1301.7014, arXiv:1401.1547 and arXiv:1611.07294 to the charged current electroproduction of pion

A chiral symmetry breaking AdS / QCD model with scalar interactions

We consider chiral symmetry breaking AdS / QCD models with cubic and quartic potentials in the scalar sector and a z dependent mass for scalars in the bulk. In these models it is possible to get good mesonic spectra using current quark masses

Finiteness of N =4 super-Yang-Mills effective action in terms of dressed N =1 superfields

We argue in favor of the independence on any scale, ultraviolet or infrared, in kernels of the effective action expressed in terms of dressed N =1 superfields for the case of N =4 super-Yang--Mills theory. Under ``finiteness'' of the effective action of dressed mean superfields we mean its ``scale independence''. We use two types of regularization: regularization by dimensional reduction and regularization by higher derivatives in its supersymmetric form. Based on the Slavnov--Taylor identity we show that dressed fields of matter and of vector multiplets can be introduced to express the effective action in terms of them. Kernels of the effective action expressed in terms of such dressed effective fields do not depend on the ultraviolet scale. In the case of dimensional reduction, by using the developed technique we show how the problem of inconsistency of the dimensional reduction can be solved. Using Piguet and Sibold formalism, we indicate that the dependence on the infrared scale disappears off shell in both the regularizations.Comment: 12 pages, revised version, references adde

Modes with variable mass as an alternative in AdS / QCD models with chiral symmetry breaking

We consider a new possibility of incorporating chiral symmetry breaking in soft wall models with a quadratic dilaton and AdS metric. In particular, we allow the mass of the scalar modes propagating in the bulk to have a dependence on the holographical coordinate. In one of the models that we discuss, it is possible obtain a good meson spectra considering current quark masses, and in the other two models considered, good results can be obtained at the expense of considering rather large quark masses.Comment: 6 pages, 6 figures; This version is similar to paper published in PR

Shadowing and Antishadowing in Neutrino Deep Inelastic Scattering

The coherence of multiscattering quark nuclear processes leads to shadowing and antishadowing of the electromagnetic nuclear structure functions in agreement with measurements. This picture leads to substantially different antishadowing for charged and neutral current processes, particularly in anti-neutrino reactions, thus affecting the extraction of the weak-mixing angle $\sin^2\theta_W$.Comment: 4 pages, 1 figure, Prepared for the International Conference on QCD and Hadronic Physics, Beijing, China, June 16-20 200

Considering anomalous dimensions in AdS/QCD models

We discuss an AdS / QCD model that consider anomalous dimensions. The effect of this kind of dimensions is considered as a mass term that depend on holographical coordenate for duals modes in bulk.Comment: Talk given at Light Cone 2010: Relativistic Hadronic and Particle Physics, June 14-18, 2010, Valencia, Spai