RESUMO
We evaluate quasielastic double-differential antineutrino cross sections obtained in a phenomenological model based on the superscaling behavior of electron scattering data and estimate the contribution of the vector meson-exchange currents in the two-particle-two-hole sector. We show that the impact of meson-exchange currents for charge-changing antineutrino reactions is much larger than in the neutrino case.
RESUMO
The results of two relativistic models with different descriptions of the final-state interactions are compared with the MiniBooNE data of charged-current quasielastic cross sections. The relativistic mean field model uses the same potential for the bound and ejected nucleon wave functions. In the relativistic Green's function model, the final-state interactions are described in the inclusive scattering consistently with the exclusive scattering using the same complex optical potential. The relativistic Green's function results describe the experimental data for total cross sections without the need to modify the nucleon axial mass.
RESUMO
We provide integrated cross sections for quasielastic charged-current neutrino-nucleus scattering. Results evaluated using the phenomenological scaling function extracted from the analysis of experimental (e, e') data are compared with those obtained within the framework of the relativistic impulse approximation. We show that very reasonable agreement is reached when a description of final-state interactions based on the relativistic mean field is included. This is consistent with previous studies of differential cross sections which are in accord with the universality property of the superscaling function.
RESUMO
Superscaling of the quasielastic cross section in charged-current neutrino-nucleus reactions at energies of a few GeV is investigated within the framework of the relativistic impulse approximation. Several approaches are used to describe final-state interactions and comparisons are made with the plane-wave approximation. Superscaling is very successful in all cases. The scaling function obtained using a relativistic mean field for the final states shows an asymmetric shape with a long tail extending towards positive values of the scaling variable, in excellent agreement with the behavior presented by the experimental scaling function.
RESUMO
Although stigma is a problem, there is a definite solution. As this material suggests, an impact can be made by targeting various markets. Since these markets have either positive, negative or neutral impressions of their local mental health organizations and related services, knowing the rating of the organization and related services helps to identify the most likely targets. Advertising can directly affect the strength of that rating in a positive direction. The extent of that effect, whether it's a change in attitude or level of recognition, will depend on the continuity of the message, the channels of communication, and synchronization of distribution. In addition, the degree of impact is contingent on how amenable the target audience is to the message. In the case of mental health, the lower level of acceptability presents an even greater challenge. The FTS project takes on the challenge with a marketing plan that is necessary because our publics say it's necessary. And it can work because, again, our publics say it works. The supporting evidence is more than just an increase in name recall and favorability factors. The supporting evidence results from any project which has been planned and implemented with the consumer in mind. Finally, the supporting evidence is clear in the interest and contributions of each participant in the FTS pilot as well as the 27 mental health organizations in 17 U.S. markets which have participated in FTS 11.
