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arXiv 0903.0476hep-ph
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球和介子:基态

Glueballs and Mesons: the Ground States

G. Ganbold

摘要:

我们提供了一个新的,独立的,和分析估计的最低胶球质量,我们发现它在1661兆电子伏内的相对论量子场模型的基础上分析约束。为了扩展这种考虑,我们还描述了常规介子和弱衰变常数。对于两胶子和两夸克束缚态的能谱,我们求解了阶梯Bethe-Salpeter方程。通过使用一组最小的模型参数(夸克质量,耦合常数,和禁闭尺度),我们得到的数值计算结果是在合理的协议与实验证据在很宽的能量尺度。该模型为同时描述低能粒子物理学的不同领域提供了合理的框架。

英文摘要:

We provide a new, independent, and analytic estimate of the lowest glueball mass, and we found it at 1661 MeV within a relativistic quantum-field model based on analytic confinement. The conventional mesons and the weak decay constants are described to extend the consideration. For the spectra of two-gluon and two-quark bound states we solve the ladder Bethe-Salpeter equation. By using a minimal set of model parameters (the quark masses, the coupling constant, and the confinement scale) we obtain numerical results which are in reasonable agreement with experimental evidence in the wide range of energy scale. The model serves a reasonable framework to describe simultaneously different sectors in low-energy particle physics.

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