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Nucleon-deuteron elastic scattering with the JISP16 potential | | R.Skibinski
; J.Golak
; K.Topolnicki
; H.Witala
; Yu.Volkotrub
; H.Kamada
; A.M.Shirokov
; R.Okamoto
; K.Suzuki
; J.P.Vary
; | | Date: |
12 Jun 2017 | | Abstract: | The nucleon-nucleon J-matrix Inverse Scattering Potential JISP16 is applied
to elastic nucleon-deuteron (Nd) scattering at the lab. nucleon energies up to
135 MeV. The formalism of the Faddeev equations is used to obtain three-nucleon
scattering states. We compare predictions based on the JISP16 force with data
and with results based on various NN interactions, including the CD Bonn, the
Argonne AV18, the chiral force with the semi-local regularization at the 5th
order of the chiral expansion and with low-momentum interactions obtained from
the CD Bonn force as well as with the predictions from the combination of the
AV18 NN interaction and the Urbana IX 3N force. JISP16 provides a satisfactory
description of some observables at low energies but strong deviations from data
as well as from standard and chiral potential predictions with increasing
energy. However, there are also polarization observables at low energies for
which the JISP16 predictions differ from those based on the other forces by a
factor of two. The reason for such a behavior can be traced back to the P-wave
components of the JISP16 force. At higher energies the deviations can be
enhanced by an interference with higher partial waves and the properties of the
JISP16 deuteron wave function. In addition, we compare the energy and angular
dependence of predictions based on the JISP16 force with the results of the
low-momentum interactions obtained with different values of the momentum cutoff
parameter. We found that such low-momentum forces can be employed to interpret
the Nd elastic scattering data only below some specific energy which depends on
the cutoff parameter. Since JISP16 is defined in a finite oscillator basis, it
has properties similar to low momentum interactions and its application to the
description of Nd scattering data is limited to a low momentum transfer region. | | Source: | arXiv, 1706.3846 | | Services: | Forum | Review | PDF | Favorites | |
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