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arXiv 0705.2957hep-ph
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相对论夸克-双夸克图象中激发态重子的质量

Masses of excited heavy baryons in the relativistic quark-diquark picture

D. Ebert, R. N. Faustov, V. O. Galkin

摘要:

在重夸克-轻双夸克近似下,采用组分夸克模型,计算了由两个轻(u,d,s)和一个重(c,b)夸克组成的激发态重子的质量谱.形成双夸克的轻夸克和重子中的轻双夸克都是完全相对论性的。v/c展开到二阶仅用于重(b和c)夸克。通过引入双夸克-胶子相互作用形状因子,考虑了双夸克的内部结构。一个整体良好的协议所获得的预测与现有的实验数据。

英文摘要:

The mass spectra of the excited heavy baryons consisting of two light (u,d,s) and one heavy (c,b) quarks are calculated in the heavy-quark--light-diquark approximation within the constituent quark model. The light quarks, forming the diquark, and the light diquark in the baryon are treated completely relativistically. The expansion in v/c up to the second order is used only for the heavy (b and c) quarks. The internal structure of the diquark is taken into account by inserting the diquark-gluon interaction form factor. An overall good agreement of the obtained predictions with available experimental data is found.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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