Four-nucleon scattering: Ab initio calculations in momentum space

Details Four-nucleon scattering: Ab initio calculations in momentum space Four-nucleon scattering: Ab initio calculations in momentum space

2006-11-09

arxiv.org/abs/nucl-th/0611029v3

Phys.Rev.C75:014005,2007

Physics

Nuclear Physics

Nuclear Theory

Corrected Eq. (10)

Scientific paper

10.1103/PhysRevC.75.014005

The four-body equations of Alt, Grassberger and Sandhas are solved for $\nH$ scattering at energies below three-body breakup threshold using various realistic interactions including one derived from chiral perturbation theory. After partial wave decomposition the equations are three-variable integral equations that are solved numerically without any approximations beyond the usual discretization of continuum variables on a finite momentum mesh. Large number of two-, three- and four-nucleon partial waves are considered until the convergence of the observables is obtained. The total $\nH$ cross section data in the resonance region is not described by the calculations which confirms previous findings by other groups. Nevertheless the numbers we get are slightly higher and closer to the data than previously found and depend on the choice of the two-nucleon potential. Correlations between the $A_y$ deficiency in $\nd$ elastic scattering and the total $\nH$ cross section are studied.

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