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arXiv 1808.08359hep-phhep-ex
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具有瞬子效应的重介子的质谱

Mass spectra of heavy mesons with instanton effects

Qian Wu, Emiko Hiyama, Hyun-Chul Kim, Ulugbek Yakhshiev, Hongshi Zong

摘要:

本文用非相对论势方法研究了普通重介子的质量谱。重-轻夸克势包含由单胶子交换产生的库仑型势、禁闭势和瞬子诱导的非微扰局域重-轻夸克势。所有参数在理论上都是受约束和固定的。我们仔细研究了瞬子真空的影响。在目前形式的局域势的瞬子真空,我们得出的结论是瞬子的影响是相当边际的魅力介子。

英文摘要:

We investigate the mass spectra of ordinary heavy mesons, based on a nonrelativistic potential approach. The heavy-light quark potential contains the Coulomb-type potential arising from one-gluon exchange, the confining potential, and the instanton-induced nonperturbative local heavy-light quark potential. All parameters are theoretically constrained and fixed. We carefully examine the effects from the instanton vacuum. Within the present form of the local potential from the instanton vacuum, we conclude that the instanton effects are rather marginal on the charmed 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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