Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2003-08-22
J.Phys. G: Nucl. Part. Phys. 30, 309 (2004)
Physics
Nuclear Physics
Nuclear Theory
22 pages, Latex
Scientific paper
10.1088/0954-3899/30/3/006
Coulomb and charge-symmetry breaking effects in the $^3$He ground state within the dressed dibaryon model developed recently for $2N$ and $3N$ forces are examined in detail. Particular attention has been paid to the Coulomb displacement energy $\Delta E_C=E_B(^3{\rm H})- E_B(^3{\rm He})$ and rms charge radii of $^3$H and $^3$He. A new scalar $3N$ force between the third nucleon a$ dibaryon is found to be very important for a correct description of the Coulomb energy and rms charge radius in $^3$He. In view of the new results for $\Delta E_C$ obtained here, the role of the effects of charge symmetry breaking in the nuclear force is discussed.
Faessler Amand
Kukulin Vladimir I.
Pomerantsev V. N.
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