论文标题
甲状腺状介子的绝热描述
Diabatic description of charmonium-like mesons
论文作者
论文摘要
我们将最初在分子物理学中首次引入的绝热形式主义应用于重夸克媒介物的描述。在这种形式主义中，动力学是由绝热势矩阵完全描述的，其元素可以从未震动的晶格QCD研究中得出。对于远低于最低开放风味梅森 - 梅森阈值的能量，由此产生的绝热方法减少到众所周知的Born-Oppenheimer近似值，在该近似值中，重夸克梅森质量对应于有效的夸克 - 易药潜力中的能量水平。对于在该阈值下方或以上接近的能量，在该阈值中，Born-oppenheimer近似失败，此方法提供了一组耦合的Schrödinger方程，这些方程均包含了非扰动的Meson-Meson组件，即超越环路更正。在此框架内，对包含$ c \ Overline {c} $的重媒体进行了一项重型介子研究，其群体在$ 4.1 $中进行了研究。从中，对传统和非常规共振的统一描述出现了。
We apply the diabatic formalism, first introduced in molecular physics, to the description of heavy-quark mesons. In this formalism the dynamics is completely described by a diabatic potential matrix whose elements can be derived from unquenched lattice QCD studies of string breaking. For energies far below the lowest open flavor meson-meson threshold, the resulting diabatic approach reduces to the well-known Born-Oppenheimer approximation where heavy-quark meson masses correspond to energy levels in an effective quark-antiquark potential. For energies close below or above that threshold, where the Born-Oppenheimer approximation fails, this approach provides a set of coupled Schrödinger equations incorporating meson-meson components nonperturbatively, i.e. beyond loop corrections. A spectral study of heavy mesons containing $c\overline{c}$ with masses below $4.1$ GeV is carried out within this framework. From it a unified description of conventional as well as unconventional resonances comes out.
