论文标题
了解$ f_0（980）$和$ a_0（980）$ asses及其宽度
Understanding the $f_0(980)$ and $a_0(980)$ masses as well as their widths
论文作者
论文摘要
标量介子$ f_0（980）$和$ a_0（980）$的低和大约相等的质量以及相对较小的衰减宽度，就标准$ p $ - p $ -Wave Quark-Antiquark States而言是无法理解的。在这里，这些介子是在单位化的夸克 - 梅森模型中研究的，以及其他轻度等级标量$ f_0（500）$，作为完整标量nonet的成员，低于1 GEV。证明它们是通过夸克（夸克（Quark）补给和强订单相互作用的组合产生的动态状态，从而导致$ su（3）_ {\ rm Floation} $对称性大大破裂。这是通过模型衰减耦合常数的函数在复合能平面中的几个极轨迹进行说明的。同样，还提供了一个称为$ e（38）$的仍然更轻的标量玻色子的实验证据，这可能与V. N. Gribov预测的一种新型的介子相对应，作为光夸克的可观察到的表现。
The low and approximately equal masses of the scalar mesons $f_0(980)$ and $a_0(980)$, as well as their relatively small decay widths, are impossible to understand in terms of standard $P$-wave quark-antiquark states. Here, these mesons are studied in a unitarised quark-meson model, together with the other light isoscalar scalar $f_0(500)$, as members of a complete scalar nonet below about 1 GeV. They are shown to be dynamical states generated by a combination of quark-confinement and strong-decay interactions, resulting in a large breaking of $SU(3)_{\rm flavour}$ symmetry. This is illustrated with several pole trajectories in the complex-energy plane as a function of the model's decay coupling constant. Also, experimental evidence is presented of a still much lighter scalar boson called $E(38)$, which may correspond to a novel kind of mesons predicted by V. N. Gribov, as an observable manifestation of a condensate of light quarks.
