Photoabsorption on 4He with a realistic nuclear force

被引：79
|
作者：
Gazit, D [1 ]
Bacca, S
Barnea, N
Leidemann, W
Orlandini, G
机构：
[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel
[2] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany
[3] Univ Trent, Dipartimento Fis, I-38050 Povo, Italy
[4] Ist Nazl Fis Nucl, Grp Coll Trento, I-38050 Povo, Italy
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 11期
关键词：
D O I：
10.1103/PhysRevLett.96.112301
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The He-4 total photoabsorption cross section is calculated with the realistic nucleon-nucleon potential Argonne V18 and the three-nucleon force (3NF) Urbana IX. Final state interaction is included rigorously via the Lorentz integral transform method. A rather pronounced giant resonance with peak cross sections of 3.0 (3.2) mb is obtained with (without) the 3NF. Above 50 MeV strong 3NF effects, up to 35%, are present. Good agreement with experiment is found close to threshold. A comparison in the giant resonance region is inconclusive, since data do not show a unique picture.
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页数：4
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