![]() The analysis provides a dynamical basis for the virtual pair couplings which are. Relativistic nuclear densities are also used in the construction. Read moreĪ complete set of Lorentz invariant nucleon-nucleon amplitudes, based on a meson-exchange model and on-mass-shell kinematics, is used to construct the impulse approximation optical potential for use in the Dirac equation. ![]() The behavior of Regge trajectories near two- and three-particle thresholds is explored. As a simple application of the results, we discuss a crude nuclear model to illustrate how sequences of rotational levels can be described by Regge trajectories. The results are generalized to cases when exchange forces are present. Except for simple kinematic factors, the only singularities of this continuation are poles and possibly isolated essential singularities. A non-rigorous construction of such a continuation is given for an amplitude which describes a scattering in which a given pair of the particles is bound in the initial and final states. #Anti photonium xt charge nuclear physics full#We show that if there is a continuation for which a Watson-Sommerfeld transformation of the full scattering amplitude can be made, then it is unique and determines the behavior of the amplitude for large values of any single. The continuation of three-particle partial wave scattering amplitudes to complex values of the total angular momentum is discussed in the framework of potential scattering. The discrepancy is most likely due to missing of the effects beyond the IA, e.g., those of the 2p–2h meson exchange currents that have contribution in the transverse responses. The models considered in this work, based on the the impulse approximation (IA), underpredict the MiniBooNE data for the flux-averaged charged-current quasielastic differential cross section per nucleon and the total cross sections, although the shape of the cross sections is represented by the approaches. ![]() Both models provide a good description of the MINER νA and NOMAD data without the need of an ad hoc increase of the value of the mass parameter in the axial-vector dipole form factor. ![]() The spectral function accounts for the nucleon-nucleon (NN) correlations by using natural orbitals from the Jastrow correlation method and has a realistic energy dependence. We compare the characteristics of the charged-current quasielastic (anti)neutrino scattering obtained in two different nuclear models, the phenomenological SuperScaling Approximation and the model using a realistic spectral function S(p, ) that gives a scaling function in accordance with the (e, e') scattering data, with the recent data published by the MiniBooNE, MINER νA, and NOMAD collaborations. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |