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Prog. Theor. Phys. Vol. 67 No. 1 (1982) pp. 236-253

[ Full Text PDF : FREE ACCESS (799K) ]

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

Toshiyuki Katayama, Yoshinori Akaishi and Hajime Tanaka

Department of Physics, Hokkaido University, Sapporo 060

(Received July 20, 1981)

Abstract:

Effects of meson exchange current (MEC) on the charge form factor (CFF) and charge density of 4He are investigated, including pair, mesonic and retardation current terms. The influence of three-body force (3BF) is considered by adopting the realistic wave function obtained from the nuclear Hamiltonian which explicitly includes the two-pion exchange 3BF. As a result the 3BF is found to greatly enhance the MEC contribution. When the 3BF is taken into account, the MEC contribution is shown to remove most of the discrepancy between the theoretical and experimental CFF's at the second maximum. Resulting effects on the charge density are found to yield a depression in the central region.


URL : http://ptp.ipap.jp/link?PTP/67/236/
DOI : 10.1143/PTP.67.236

[ Full Text PDF : FREE ACCESS (799K) ] Citation:

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  5. Progress of Theoretical Physics Vol. 78 No. 5 (1987) pp. 1117-1131 :
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