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arXiv 2104.02787hep-phnucl-th
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探索轻和重-轻伪标量的味含量

Exploring the flavor content of light and heavy-light pseudoscalars

R. M. Moita, J. P. B. C. de Melo, K. Tsushima, T. Frederico

摘要:

在统一的协变组分夸克模型下研究了轻、粲D和Ds赝标介子的电弱性质。通过夸克动量的交换,我们假定夸克-反夸克-介子的顶点具有对称形式,这成功地描述了轻赝标介子的性质。计算了弹性电磁形状因子、电磁荷半径和弱衰减常数的味分解。在此基础上,讨论了SU(3)和SU(4)对称性破缺,并与π介子和K介子的性质进行了比较,突出了Higgs对这些介子结构的贡献。

英文摘要:

The electroweak properties of light and charmed D and Ds pseudoscalar mesons are investigated within a unified covariant constituent quark model. The quark-antiquark-meson vertices are assumed to have a symmetric form by the exchange of quark momenta, which is successful in describing the light pseudoscalar meson properties. The flavor decomposition of the elastic electromagnetic form factors, electromagnetic charge radii, and weak decay constants are calculated. Based on the results a discussion on the SU(3) and SU(4) symmetry breaking is made and a comparison with the pion and kaon properties to highlight the Higgs contribution to the structure of these mesons.

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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