论文标题
重新审视激发标量魅力的介子的耐激发标量的效果
Hadronic loop effects to excited scalar charmed mesons revisited
论文作者
论文摘要
我们重新检查hadronic循环效应$ d^*_ 0 $和$ d^*_ {s0} $在夸克模型中计算出的重中梅森手性扰动理论（HMCHPT）的框架。纠正了先前作品中手性循环功能论证中的不准确性。我们的计算考虑了有效拉格朗日语的手性扩展中出现的完整的一环校正。与以前的方法不同，我们的方法在解释了粒子数据组（PDG）报道的观察到的标量魅力状态的低质量时令人满意的结果。发现裸露$ d^*_ {s0} $（$ d^*_ {0} $）状态的质量转移主要是由于$ dk $（$dπ$）循环校正与与测量值相兼容的耦合值的值。我们展示了为什么以前使用HMCHPT在研究手性循环引起的质量转移效应时的方法给出了不令人满意的结果。
We re-examine the hadronic loop effects to the masses of $D^*_0$ and $D^*_{s0}$ calculated in quark models in the framework of heavy meson chiral perturbation theory (HMCHPT). The inaccuracy in the choice of the argument of the chiral loop functions in previous works is corrected. Our calculations consider the full one-loop corrections that appear at leading order in the chiral expansion of the effective Lagrangian. Unlike previous approaches, ours leads to satisfactory results in explaining the low mass of the observed scalar charm states reported by the Particle Data Group (PDG). It is found that the mass shift of bare $D^*_{s0}$ ($D^*_{0}$) state is mainly due to the $DK$ ($Dπ$) loop corrections for values of the couplings that are compatible with the measured ones. We show why previous approaches of using HMCHPT in studying mass shift effects due to chiral loops gave unsatisfactory results.
