(K)over-barNN quasibound state and the (K)over-bar N interaction:: Coupled-channels Faddeev calculations of the (K)over-barNN-πΣN system

被引：195

作者：

Shevchenko, N. V. ^{[1
]}

Gal, A. ^{[2
]}

Mares, J. ^{[1
]}

Revai, J. ^{[3
]}

机构：

[1] Acad Sci Czech Republ, Inst Nucl Phys, CZ-25068 Rez, Czech Republic

[2] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

[3] Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary

来源：

PHYSICAL REVIEW C | 2007年 / 76卷 / 04期

关键词：

D O I：

10.1103/PhysRevC.76.044004

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Coupled-channels three-body calculations of an I=1/2,J(pi)=0(-) (K) over bar NN quasibound state in the (K) over bar NN-pi Sigma N system were performed and the dependence of the resulting three-body energy on the two-body (K) over barN-pi Sigma interaction was investigated. Earlier results of binding energy B(K)(-)pp similar to 50-70 MeV and width Gamma(-)(K)pp similar to 100 MeV are confirmed [N. V. Shevchenko , Phys. Rev. Lett. 98, 082301 (2007)]. It is shown that a suitably constructed energy-independent complex (K) over barN potential gives a considerably shallower and narrower three-body quasibound state than the full coupled-channels calculation. Comparison with other calculations is made.

引用

页数：9

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