Improved constraints on chiral SU(3) dynamics from kaonic hydrogen

被引：123

作者：

Ikeda, Yoichi ^{[1
,2
]}

Hyodo, Tetsuo ^{[1
]}

Weise, Wolfram ^{[3
]}

机构：

[1] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan

[2] RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan

[3] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany

来源：

PHYSICS LETTERS B | 2011年 / 706卷 / 01期

关键词：

LOW-ENERGY K; CHARGE-EXCHANGE SCATTERING; SIGMA-HYPERON PRODUCTION; MESON-BARYON SCATTERING; 470; MEV-C; X-RAYS; NUCLEON INTERACTIONS; MOMENTUM RANGE; P INTERACTIONS; 300; MEV/C;

D O I：

10.1016/j.physletb.2011.10.068

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A new improved study of K(-)-proton interactions near threshold is performed using coupled-channels dynamics based on the next-to-leading order chiral SU(3) meson-baryon effective Lagrangian. Accurate constraints are now provided by new high-precision kaonic hydrogen measurements. Together with threshold branching ratios and scattering data, these constraints permit an updated analysis of the complex (K) over barN and pi Sigma coupled-channels amplitudes and an improved determination of the K(-)p scattering length, including uncertainty estimates. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：63 / 67

页数：5

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