Two-meson cloud contribution to the baryon antidecuplet binding -: art. no. 045205

被引：8

作者：

Hosaka, A ^{[1
]}

Hyodo, T

Llanes-Estrada, FJ

Oset, E

Peláez, JR

Vacas, MJV

机构：

[1] RCNP, Osaka 5670047, Japan

[2] Univ Complutense Madrid, Dept Fis Teor 1, E-28040 Madrid, Spain

[3] Univ Valencia, CSIC, Inst Invest Paterna, Dept Fis Teor, E-46071 Valencia, Spain

[4] Univ Valencia, CSIC, Inst Invest Paterna, Ctr Mixto,IFIC, E-46071 Valencia, Spain

[5] Univ Complutense Madrid, Dept Fis Teor 2, E-28040 Madrid, Spain

来源：

PHYSICAL REVIEW C | 2005年 / 71卷 / 04期

关键词：

D O I：

10.1103/PhysRevC.71.045205

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：

We study the two-meson virtual cloud contribution to the self-energy of the SU(3) antidecuplet, to which the Theta(+) pentaquark is assumed to belong. This is motivated by the large branching ratio of the N(1710) decay into two pions and one nucleon. We derive effective Lagrangians that describe the N(1710) decay into N pi pi with two pions in s or p wave. We obtain increased binding for all members of the antidecuplet and a contribution to the mass splitting between states with different strangeness which is at least 20% of the empirical one. We also provide predictions for three-body decays of the pentaquark antidecuplet.

引用

页数：12

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