论文标题
双重魅力状态$ t^{+} _ {cc} $的HADRONIC分子模型
Hadronic molecule model for the doubly charmed state $T^{+}_{cc}$
论文作者
论文摘要
通过将其视为HADRONIC MOLECUEL $ M_ {CC}^{+equiv D^{0} D^{0} d^{0} d^{\ ast+ast+} $，可以探索双重迷人四夸克梅森$ t_ {cc}^{+} $的质量，当前耦合和宽度。该分子的质量和当前耦合是使用QCD两点总规则方法计算的，通过将各种真空冷凝物的分析贡献纳入到尺寸$ 10 $的分析贡献中。质量$ m =（4060 \ pm 130）〜\ mathrm {mev} $的预测超过了两元$ d^{0} d^{0} d^{\ ast +} $ threshold $ 3875.1〜 \ mathrm {mev} $，这使得Molecule $ M _} $ conson of Molecule d^{0} d^{\ ast +} $ kinematorationally允许进程。通过应用QCD三分线总规则方法，可以找到强烈的顶点上的粒子粒子粒子的粒子颗粒的强耦合$ g $获得的宽度$γ=（3.8 \ pm 1.7）〜\ mathrm {mev} $获得的结果表明，$ m_ {cc}^{+} $比共振$ t_ {cc}^{+} $宽。
The mass, current coupling, and width of the doubly charmed four-quark meson $T_{cc}^{+}$ are explored by treating it as a hadronic molecule $ M_{cc}^{+}\equiv D^{0}D^{\ast +}$. The mass and current coupling of this molecule are calculated using the QCD two-point sum rule method by including into analysis contributions of various vacuum condensates up to dimension $ 10 $. The prediction for the mass $m=(4060\pm 130)~\mathrm{MeV}$ exceeds the two-meson $D^{0}D^{\ast +}$ threshold $3875.1~\mathrm{MeV}$, which makes decay of the molecule $M_{cc}^{+}$ to a pair of conventional mesons $ D^{0}D^{\ast +}$ kinematically allowed process. The strong coupling $G $ of particles at the vertex $M_{cc}^{+}D^{0}D^{\ast +}$ is found by applying the QCD three-point sum rule approach, and used to evaluate the width of the decay $M_{cc}^{+} \to D^{0}D^{\ast +}$. Obtained result for the width $ Γ=(3.8\pm 1.7)~\mathrm{MeV}$ demonstrates that $M_{cc}^{+}$ is wider than the resonance $T_{cc}^{+}$.
