Reaction channel contributions to the triton optical potential

This article is composed of three subjects. First, the relation between the method of continuum-discretized coupled channels (CDCC) and the Faddeev theory is clarified to show the validity of CDCC. Second, CDCC is applied to four-body reactions such as (6 He , nn 4 He ) as an example of recent progress in CDCC. Third, we propose a microscopic version of CDCC in which a localized form of the microscopic nucleon-nucleus optical potential is used as an input of CDCC calculation instead of the phenomenological optical potential commonly used. The validity of the Brieva-Rook localization is shown for the proton scattering in a wide incident-energy range.

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STUDY OF IN-MEDIUM PROPERTIES OF N*(1535) AND CHIRAL SYMMETRY FOR BARYONS THROUGH THE η-MESIC NUCLEI FORMATION AT J-PARC

Modern Physics Letters A ◽

10.1142/s0217732308029691 ◽

2008 ◽

Vol 23 (27n30) ◽

pp. 2512-2515 ◽

Cited By ~ 1

Author(s):

HIDEKO NAGAHIRO ◽

DAISUKE JIDO ◽

SATORU HIRENZAKI

Keyword(s):

Chiral Symmetry ◽

Cross Sections ◽

Optical Potential ◽

Nuclear Medium ◽

Nucleus Interaction ◽

Level Crossing ◽

Doublet Model ◽

The Difference ◽

Characteristic Features ◽

Mesic Nuclei

We investigate the properties of η-nucleus interaction by postulating the N*(1535) dominance for η-N system. We evaluate the N*(1535) properties in the nuclear medium using two kinds of chiral models, and find that these two models provide qualitatively different η-nucleus optical potentials reflecting the quite distinct properties of N*(1535) in these chiral models. Especially, in the chiral doublet model, we can expect to have the level crossing between η and N*(1535)-hole which is expected to provide the characteristic features for the optical potential and the formation spectra. We find also that the difference of these models can be seen in the formation cross sections of the η mesic nuclei with (π+, p ) reaction expected to be performed at J-PARC project.

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ON THE OPTICAL POTENTIAL OF AN ATTRACTIVE NONRELATIVISTIC DEGENERATE ELECTRON GAS INTERACTING WITH NUCLEAR MATTER

Modern Physics Letters B ◽

10.1142/s0217984912502107 ◽

2012 ◽

Vol 26 (31) ◽

pp. 1250210 ◽

Cited By ~ 2

Author(s):

M. A. GRADO-CAFFARO ◽

M. GRADO-CAFFARO

Keyword(s):

Nuclear Matter ◽

Optical Potential ◽

Electron Gas ◽

Three Dimensional ◽

Harmonic Oscillators ◽

Fermi Velocity ◽

Potential Well ◽

Schwinger Model ◽

Degenerate Fermi Gas ◽

Degenerate Electron Gas

The optical potential of an attractive nonrelativistic electron gas interacting with nuclear matter is determined on the basis of the concept of degenerate Fermi gas. In fact, the involved electrons are treated as three-dimensional quantum harmonic oscillators confined at the surface of a spherical (approximately ideal) potential well. Within this picture, the Fermi velocity is calculated as well as the spatial electron density at the surface of the potential well and the attractive force between the electron gas and the nuclear matter. In addition, considerations related to the Lippmann–Schwinger model are made.

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