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arXiv 1302.4577hep-lathep-ph
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多味QCD的标量谱

The scalar spectrum of many-flavour QCD

Yasumichi Aoki, Tatsumi Aoyama, Masafumi Kurachi, Toshihide Maskawa, Kei-ichi Nagai, Hiroshi Ohki, Enrico Rinaldi, Akihiro Shibata, Koichi Yamawaki, Takeshi Yamazaki

摘要:

LatKMI合作组利用交错费米子格点模拟系统地研究了N_f = 4,8,12,16 SU(3)规范理论的动力学性质。探索多味QCD的光谱,以及它在手征极限附近的标度,是强制性的,以确定这些模型之一是否实现了行走的Technicolor场景。虽然研究介子光谱的晶格技术已经发展得很好,但标量味单重态仍然需要额外的努力才能确定。此外,胶子观测值通常需要大统计模拟和强大的降噪技术。在下文中,我们介绍了研究标量胶球和标量味单重态介子的有用的光谱方法,以及LatKMI合作组在N_f = 12 QCD中标量谱的研究现状。

英文摘要:

The LatKMI collaboration is studying systematically the dynamical properties of N_f = 4,8,12,16 SU(3) gauge theories using lattice simulations with (HISQ) staggered fermions. Exploring the spectrum of many-flavour QCD, and its scaling near the chiral limit, is mandatory in order to establish if one of these models realises the Walking Technicolor scenario. Although lattice technologies to study the mesonic spectrum are well developed, scalar flavour-singlet states still require extra effort to be determined. In addition, gluonic observables usually require large-statistic simulations and powerful noise-reduction techniques. In the following, we present useful spectroscopic methods to investigate scalar glueballs and scalar flavour-singlet mesons, together with the current status of the scalar spectrum in N_f = 12 QCD from the LatKMI collaboration.

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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