s-wave charmed baryon resonances from a coupled-channel approach with heavy quark symmetry

被引：123

作者：

Garcia-Recio, C. ^{[1
]}

Magas, V. K. ^{[2
,7
]}

Mizutani, T. ^{[3
]}

Nieves, J. ^{[4
]}

Ramos, A. ^{[2
,7
]}

Salcedo, L. L. ^{[1
]}

Tolos, L. ^{[5
,6
]}

机构：

[1] Univ Granada, Dept Fis Atom Mol & Nucl, E-18071 Granada, Spain

[2] Univ Barcelona, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain

[3] Virginia Polytech Inst & State Univ, Dept Phys, Blacksburg, VA 24061 USA

[4] Inst Fis Corpuscular Ctr Mixto CSIC UV, Inst Invest Paterna, Valencia 46071, Spain

[5] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, Frankfurt, Germany

[6] Univ Groningen, Theory Grp, KVI, NL-9747 AA Groningen, Netherlands

[7] Univ Barcelona, Inst Ciencies Cosmos, E-08028 Barcelona, Spain

来源：

PHYSICAL REVIEW D | 2009年 / 79卷 / 05期

关键词：

KAON-NUCLEON INTERACTIONS; CHIRAL UNITARY APPROACH; BETHE-SALPETER APPROACH; DECAY CONSTANTS; MESON-MESON; DYNAMICS; DEPENDENCE; STATES; ETA;

D O I：

10.1103/PhysRevD.79.054004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study charmed baryon resonances that are generated dynamically within a unitary meson-baryon coupled-channel model that treats the heavy pseudoscalar and vector mesons on equal footing as required by heavy-quark symmetry. It is an extension of recent SU(4) models with t-channel vector-meson exchanges to an SU(8) spin-flavor scheme, but differs considerably from the SU(4) approach in how the strong breaking of the flavor symmetry is implemented. Some of our dynamically generated states can be readily assigned to recently observed baryon resonances, while others do not have a straightforward identification and require the compilation of more data as well as an extension of the model to d-wave meson-baryon interactions and p-wave coupling in the neglected s- and u-channel diagrams. Of several novelties, we find that the Lambda(c)(2595), which emerged as a ND quasibound state within the SU(4) approaches, becomes predominantly a ND* quasibound state in the present SU(8) scheme.

引用

页数：24

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