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arXiv 1406.4158hep-phhep-latnucl-th
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量子色动力学中耦合πK,ηK散射的共振

Resonances in coupled πK,ηK scattering from quantum chromodynamics

Jozef J. Dudek, Robert G. Edwards, Christopher E. Thomas, David J. Wilson

摘要:

使用量子色动力学中的第一性原理计算,我们能够确定奇异度=1的共振模式,其在耦合$πK$、$ηK$散射振幅内表现为复杂的奇点。我们利用数值计算的格子离散方法的量子场论与轻夸克质量对应的$m_π\sim 400\, \textrm{MeV}$和在一个单一的晶格间距。散射振幅的能量依赖性是通过它们与有限体积中的离散谱的关系来提取的,我们以前所未有的细节绘制了这些关系。

英文摘要:

Using first-principles calculation within Quantum Chromodynamics, we are able to determine a pattern of strangeness=1 resonances which appear as complex singularities within coupled $πK$, $ηK$ scattering amplitudes. We make use of numerical computation in the lattice discretized approach to the quantum field theory with light quark masses corresponding to $m_π\sim 400\, \textrm{MeV}$ and at a single lattice spacing. The energy dependence of scattering amplitudes is extracted through their relationship to the discrete spectrum in a finite-volume, which we map out in unprecedented detail.

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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