Meson Exchange Current and Three-Body Force Contributions to the 4He Charge Form Factor

The charge form factor of the model triton clearly exhibits the collapse which occurs in the triton for purely nonlocal two-body interactions with continuum bound states and approaches an asymptotic shape with increasing binding energy. However, partly nonlocal interactions with continuum bound states, which previously have been shown not to produce such a collapse, also show no evidence whatsoever of the presence of the two-particle continuum bound state in the triton charge form factor. In the physically interesting case of partly nonlocal interactions the occurrence of a continuum bound state in the two-body interactions therefore can be completely harmless in the three-body system.

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Role of Meson-Exchange Currents in the Charge Form Factor ofLi6

Physical Review Letters ◽

10.1103/physrevlett.54.646 ◽

1985 ◽

Vol 54 (7) ◽

pp. 646-648 ◽

Cited By ~ 6

Author(s):

M. A. K. Lodhi ◽

Robert B. Hamilton

Keyword(s):

Form Factor ◽

Charge Form Factor ◽

Meson Exchange ◽

Charge Form ◽

Meson Exchange Currents

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Improved calculation of some meson exchange current contributions to the magnetic form factor of medium-heavy nuclei

Physics Letters B ◽

10.1016/0370-2693(81)90660-2 ◽

1981 ◽

Vol 101 (3) ◽

pp. 141-146 ◽

Cited By ~ 27

Author(s):

J.F. Mathiot ◽

B. Desplanques

Keyword(s):

Form Factor ◽

Magnetic Form Factor ◽

Exchange Current ◽

Meson Exchange ◽

Heavy Nuclei ◽

Meson Exchange Current

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THE ISOSCALAR CHARGE FORM FACTOR IN NUCLEI OF A=2, 3 OBTAINED IN THE SKYRME MODEL

International Journal of Modern Physics A ◽

10.1142/s0217751x88000886 ◽

1988 ◽

Vol 03 (09) ◽

pp. 2127-2142 ◽

Cited By ~ 1

Author(s):

Y. KLUGER ◽

J.M. EISENBERG

Keyword(s):

Form Factor ◽

Momentum Transfer ◽

Single Particle ◽

Skyrme Model ◽

Charge Form Factor ◽

Meson Exchange ◽

Charge Form ◽

Particle Form ◽

Nuclear Systems ◽

Momentum Transfer Range

The isoscalar exchange currents for nuclear systems consisting of two and three nucleons are studied in the framework of Skyrme’s model for hadrons. For the deuteron we obtain an isoscalar form factor almost identical with that of meson-exchange models; the zero in the single particle form factor near q2≃20 fm−2 is drawn to q2≃19 fm−2, the form factor being also increased in the momentum-transfer range q2>20 fm−2. The isoscalar exchange current in the system of three nucleons draws the zero in the form factor towards values closer to experimental ones, similar to other meson exchange models. In addition to two-nucleon contributions to the current we also treat briefly three-nucleon terms in the A=3 system.

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