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arXiv 0808.2399hep-ph
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具有横成分胶子的胶泵模型

Gluelump model with transverse constituent gluons

F. Buisseret

摘要:

我们发现,C-奇胶子可以成功地描述为一个单一的横向组分胶子的束缚态,在静态色八重态源产生的类磁通管势中演化。对组分胶子使用螺旋自由度而不是自旋自由度,禁止了在格点量子色动力学中观察不到的状态。我们的模型导致了一个显着的协议与现有的晶格数据提供了一个额外的宇称分裂质量项的胶泵质谱。我们认为,这样一个长期是由于瞬子诱导的相互作用在胶堆。

英文摘要:

We show that C-odd gluelumps can be successfully described as bound states of a single transverse constituent gluon evolving in the flux-tube-like potential generated by a static color-octet source. The use of a helicity degree of freedom rather than a spin one for the constituent gluon forbids the states that are not observed in lattice QCD. Our model leads to a gluelump mass spectrum in remarkable agreement with the available lattice data provided that an additional parity-splitting mass term is introduced. We argue that such a term is due to instanton-induced interactions in gluelumps.

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