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arXiv 1602.05002hep-phhep-ex
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矢量重-轻介子中缀饰夸克胶子顶点的效应和B(c)* 介子质量的理论平均

Effects of a dressed quark-gluon vertex in vector heavy-light mesons and theory average of B(c)* meson mass

M. Gomez-Rocha, T. Hilger, A. Krassnigg

摘要:

我们扩展较早的调查的重轻赝标介子的矢量情况下,使用一个简单的模型的背景下的戴森-Schwinger-Bethe-Salpeter方法。我们调查的影响,穿着夸克胶子顶点在一个系统的方式和说明,并试图量化修正超越现象学上非常有用的和成功的彩虹梯截断。特别地,我们研究了在这样的装置中的缀饰夸克光子顶点,并对实验上未知的B_c* 的质量进行了预测,我们在6.334 GeV处得到的结果与其他方法的预测很好地一致。此外,我们结合了一套全面的结果,从理论文献。B_c ~* 介子质量的理论平均值为6.336 ± 0.002GeV。

英文摘要:

We extend earlier investigations of heavy-light pseudoscalar mesons to the vector case, using a simple model in the context of the Dyson-Schwinger-Bethe-Salpeter approach. We investigate the effects of a dressed-quark-gluon vertex in a systematic fashion and illustrate and attempt to quantify corrections beyond the phenomenologically very useful and successful rainbow-ladder truncation. In particular we investigate dressed quark photon vertex in such a setup and make a prediction for the experimentally as yet unknown mass of the B_c*, which we obtain at 6.334 GeV well in line with predictions from other approaches. Furthermore, we combine a comprehensive set of results from the theory literature. The theory average for the mass of the B_c* meson is 6.336 +- 0.002 GeV.

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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