Production of hyperon resonances induced by kaons on a deuteron target

被引：16

作者：

Yamagata-Sekihara, J. ^{[1
]}

Sekihara, T. ^{[1
]}

Jido, D. ^{[2
,3
]}

机构：

[1] High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, Ibaraki 3050801, Japan

[2] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan

[3] High Energy Accelerator Res Org KEK, J PARC Branch, KEK Theory Ctr, Tokai, Ibaraki, Japan

来源：

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS | 2013年 / 2013卷 / 04期

关键词：

CHIRAL DYNAMICS; NUCLEON INTERACTIONS; BOUND-STATES; LAMBDA(1405); PHOTOPRODUCTION; SCATTERING; ASTERISK; PROTON;

D O I：

10.1093/ptep/ptt009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The K(-)d -> pi Y N reaction is theoretically studied to investigate the K--induced production of the hyperon resonances Sigma(1385) and Lambda(1405). For this purpose, we take into account the p-wave amplitudes for meson-baryon two-body scatterings as well as the s-wave amplitudes. Due to the fact that the hyperon resonances are selectively produced from the (K) over bar N channel in this reaction, the Lambda(1405) peak appears at 1420 MeV, which implies that Lambda(1405) and Sigma(1385) could be separately seen in the missing-mass spectrum of the emitted nucleon in the K(-)d -> nX reaction. The pi Y invariant-mass spectrum in this study is consistent with experimental data both for Sigma(1385) and Lambda(1405). The pion exchange contributions are also included and are found to give a smooth background without distorting the peak structure of the hyperon resonances.

引用

页数：18

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