Many - body techniques for quasielastic scattering in nuclear matter : I . Non - relativistic potentials
نویسنده
چکیده
Many-body techniques for the calculation of quasielastic nuclear matter response functions in the fully antisymmetrized random phase approximation on a Hartree-Fock basis are discussed in detail. The methods presented here allow for an accurate evaluation of the response functions with little numerical effort. Formulae are given for a generic non-relativistic potential parameter-ized in terms of meson exchanges; on the other hand, relativistic kinematical effects have been accounted for.
منابع مشابه
Antisymmetrized random phase approximation for quasielastic scattering in nuclear matter: Non-relativistic potentials
Many-body techniques for the calculation of quasielastic nuclear matter response functions in the fully antisymmetrized random phase approximation on a Hartree-Fock basis are discussed in detail. The methods presented here allow for an accurate evaluation of the response functions with little numerical effort. Formulae are given for a generic non-relativistic potential parameterized in terms of...
متن کاملRelativistic and nuclear structure effects in parity-violating quasielastic electron scattering.
The parity violating longitudinal asymmetry A is calculated for quasielastic electron scattering. We use a variety of relativistic mean field models for the response of nuclear matter and 12 C at a momentum transfer of q=550 MeV/c. Relativistic effects from a reduced nucleon mass, RPA correlations and vacuum polarization can all change A by a relatively large amount. These large nuclear structu...
متن کاملThe relativistic G-matrix approach and applications
The Dirac-Brueckner approach to the nuclear many-body problem is described. A family of relativistic mesonexchange potentials is used which apply the pseudovector coupling for the interaction of pseudoscalar mesons ( , ) with nucleons. These potentials describe low-energy two-nucleon scattering and the deuteron data accurately. Using these potentials, the properties of nuclear matter are calcul...
متن کاملA resolution of the missing charge problem in nuclear Coulomb sum
At high momentum transfer jqj > 1GeV, the longitudinal response in quasielastic electron scattering o¤ nuclei is well reproduced by the free Fermi gas model. This suggests the suppression of the Z-graph contributions in elementary electronnucleon scattering in nuclear medium. Therefore we develop the relativistic model in which those contributions are partially suppressed. The suppression rede ...
متن کاملA ug 1 99 4 Submitted to Physical Review C UC / NPL - 1108 Comparison of K + and e − Quasielastic Scattering
We formulate K +-nucleus quasielastic scattering in a manner which closely parallels standard treatments of e −-nucleus quasielastic scattering. For K + scattering, new responses involving scalar contributions appear in addition to the Coulomb (or longitudinal) and transverse (e, e ′) responses which are of vector character. We compute these responses using both nuclear matter and finite nucleu...
متن کامل