Doubly heavy-quark baryon spectroscopy and semileptonic decay

被引：24

作者：

Albertus, C. ^{[1
]}

Hernandez, E.

Nieves, J.

Verde-Velasco, J. M.

机构：

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

[2] Fac Ciencias, Grp Fis Nucl, Dept Fis Fundamental, E-37008 Salamanca, Spain

[3] Fac Ciencias, IUFFyM, E-37008 Salamanca, Spain

来源：

EUROPEAN PHYSICAL JOURNAL A | 2007年 / 31卷 / 04期

关键词：

D O I：

10.1140/epja/i2006-10242-2

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：

Working in the framework of a nonrelativistic quark model we evaluate the spectra and semileptonic decay widths for the ground state of doubly heavy Xi and Omega baryons. We solve the three-body problem using a variational ansatz made possible by the constraints imposed by heavy-quark spin symmetry. In order to check the dependence of our results on the inter-quark interaction, we have used five different quark-quark potentials which include Coulomb and hyperfine terms coming from one-gluon exchange, plus a confining term. Our results for the spectra are in good agreement with a previous calculation done using a Faddeev approach. For the semileptonic decay our results for the total decay widths are in good agreement with the ones obtained within a relativistic quark model in the quark-diquark approximation.

引用

页码：691 / 694

页数：4

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