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arXiv 1505.00550hep-ph
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非微扰QCD参数对底介子的重要性

Importance of Non-Perturbative QCD Parameters for Bottom Mesons

A. Upadhyay, M. Batra

摘要:

本文讨论了非微扰量子色动力学参数对底介子质量和同位旋分裂的预测能力的重要性。在重夸克有效理论的框架下,着重讨论了重夸克有效理论公式中两个非微扰QCD参数的不同允许值,并利用最佳拟合参数计算了JP=(1/2)+二重态激发底介子在奇异和非奇异扇区中的质量.计算的质量被发现是匹配以及与实验和其他唯象模型。我们还分析了奇异和非奇异重介子在自旋和味对称性下的质量和超精细分裂。

英文摘要:

The importance of non-perturbative Quantum Chromodynamics [QCD] parameters is discussed in context to the predicting power for bottom meson masses and isospin splitting. In the framework of heavy quark effective theory, the work presented here focuses on the different allowed values of the two non perturbative QCD parameters used in heavy quark effective theory formula and using the best fitted parameter, masses of the excited bottom meson states in JP=(1/2)+ doublet in strange as well as non-strange sector are calculated here. The calculated masses are found to be matching well with experiments and other phenomenological models. The mass and hyperfine splitting has also been analyzed for both strange and non-strange heavy mesons with respect to spin and flavor symmetries.

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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