M. C. Martínez

Nuclear model effects in charged current neutrino nucleus quasielastic scattering

The quasielastic scattering of muon neutrinos on oxygen 16 is studied for neutrino energies between

RPWIA analysis of dynamical relativistic contributions in 16O(e→,e′p→) reactions

200\phantom{\rule{0.3em}{0ex}}\text{MeV}

RPWIA analysis of dynamical relativistic contributions in

and

^{16}O(\vec{e},e'\vec{p})

1\phantom{\rule{0.3em}{0ex}}\text{GeV}

reactions

using a relativistic shell model. Final state interactions are included within the distorted wave impulse approximation, by means of a relativistic optical potential, with and without imaginary part, and of a relativistic mean field potential. For comparison with experimental data the inclusive charged-current quasielastic cross section for

A(e, e'p)B responses: From bare nucleons to complex nuclei

{\ensuremath{\nu}}_{\ensuremath{\mu}}\ensuremath{-}^{12}\mathrm{C}

Kinematical relativistic effects in (e→,e′N→) reactions

scattering in the kinematical conditions of the LSND experiment at Los Alamos is also presented and briefly discussed.

Analysis of polarizedO16(e⃗,e′p⃗)observables within the relativistic distorted wave impulse approximation

Abstract Coincidence scattering of polarized electrons from nuclei with polarization transfer to outgoing nucleons is studied within the context of relativistic mean field theory. Effects introduced by the dynamical enhancement of the lower components of the bound nucleon wave function are analyzed for the polarized response functions and transferred polarization asymmetries assuming the relativistic plane-wave impulse approximation (RPWIA). Results obtained by projecting out the negative-energy components are compared with the fully relativistic calculation for proton knockout from p 1/2 and p 3/2 shells in 16 O for a variety of kinematic situations. The crucial role played by the relativistic dynamics in some spin-dependent observables is clearly manifested even for low/medium values of the missing momentum. The degree to which knowledge about nucleon form factors can be extracted from analyses of this type of process is also discussed.

Nucleon helicity asymmetries in quasielastic neutrino-nucleus interactions

Abstract Coincidence scattering of polarized electrons from nuclei with polarization transfer to outgoing nucleons is studied within the context of relativistic mean field theory. Effects introduced by the dynamical enhancement of the lower components of the bound nucleon wave function are analyzed for the polarized response functions and transferred polarization asymmetries assuming the relativistic plane-wave impulse approximation (RPWIA). Results obtained by projecting out the negative-energy components are compared with the fully relativistic calculation for proton knockout from p 1/2 and p 3/2 shells in 16 O for a variety of kinematic situations. The crucial role played by the relativistic dynamics in some spin-dependent observables is clearly manifested even for low/medium values of the missing momentum. The degree to which knowledge about nucleon form factors can be extracted from analyses of this type of process is also discussed.

Spin asymmetry for the O-16(polarized-gamma, pi- p) reaction in the Delta(1232) region within an effective Lagrangian approach

We study the occurrence of factorization in polarized and unpolarized observables in coincidence quasielastic electron scattering. Starting with the relativistic distorted wave impulse approximation, we reformulate the effective momentum approximation and show that the latter leads to observables which factorize under some specific conditions. Within this framework, the role played by final state interactions and, in particular, by the spin-orbit term is explored. Connection with the nonrelativistic formalism is studied in depth. Numerical results are presented to illustrate the analytical derivations and to quantify the differences between factorized and unfactorized approaches.