arXiv subjects

H. Morita

Publications and source records attributed to H. Morita.

22 records · Page 2Linked to original sources

arXiv2001

Finite formation time effects in inclusive and semi-inclusive electro-disintegration of few-body nuclei

Finite Formation Time (FFT) effects in the exclusive reaction ^4He(e,e'p)^3H at high values of Q^2 are introduced and discussed. It is shown that the minimum in the momentum distributions predicted by the Plane Wave Impulse Approximation (PWIA), which is filled by the Glauber-type Final State Interaction (FSI), is completely recovered when FFT effects are taken into account. The semi-inclusive process ^4 He(e,e'p)X is also investigated.

nucl-th↗

arXiv2000

Final state interaction in inclusive and exclusive quasi-elastic processes

We discuss a new approach to final state interactions, that keeps explicitly into account the virtuality of the ejected nucleon in quasi-elastic $A(e,e'p)X$ scattering at very large $Q^2$, and we present some recent results, at moderately large $Q^2$ values, for the nuclear transparency in $^4He$, $^{16}O$ and $^{40}Ca$ and for the momentum distributions of $^4He$.

nucl-th↗

arXiv1999

A realistic study of the nuclear transparency and the distorted momentum distributions in the semi-inclusive process 4He(e,e'p)X

The nuclear transparency and the distorted momentum distributions of 4He in the semi-inclusive process 4He(e,e'p)X are calculated within the Glauber multiple scattering approach using for the first time realistic four-body variational wave functions embodying central and non-central nucleon-nucleon (N-N) correlations. The contributions from N-N correlations and from Glauber multiple scattering are taken into account exactly to all orders. It is shown that non-central correlations significantly affect both the transparency and the distorted momentum distributions; as a matter of fact: i) the small (approx 3%) value of the effect of correlations on the transparency results from an appreciable cancellation between the short-range central repulsive correlations and the intermediate-range attractive correlations, whose magnitude is significantly affected by the non-central forces, and ii) the effect of Glauber final state interactions on the momentum distribution is reduced by the inclusion of tensor correlations.

nucl-th↗

arXiv1998

Missing momentum distributions and nuclear transparency in semi-inclusive A(e,e'p)X processes

A linked cluster expansion for the distorted one-body mixed density matrix is obtained within the Glauber multiple scattering theory with correlated wave functions. The nuclear transparency for 16O is calculated using realistic central and non-central correlations. The convergence of the expansion is investigated in the case of 4He for which the transparency and the distorted momentum distributions are calculated to all order in the correlations using a variational wave function obtained from realistic NN interactions. The important role played by non central correlations is illustrated.

nucl-th↗