论文标题
双重迷人的tetraquark $ t^{+} _ {cc} $的奇怪合作伙伴
Strange partners of the doubly charmed tetraquark $T^{+}_{cc}$
论文作者
论文摘要
轴向矢量的光谱参数和宽度$ t_ {cc：s}^{\ mathrm {av}} $和标量$ t_ {cc：s}^{\ mathrm {s}}与内容$ cc \ cc \ overline {u} \ overline {s} $的双重迷人的外来中介$ t_ {cc}^{+} $的合作伙伴是在QCD SUM规则方法的框架中计算的。我们将$ t_ {cc：s}^{\ mathrm {av}} $作为diquark-antidiquark状态组成，由轴向矢量和标量组成，而标量粒子$ t_ {cc：s}} t} _ {cc：s}^{\ mathrm {s}} $分别由轴向矢量和标量diquarks构建。这些四夸克人的质量和当前耦合是通过考虑夸克，gluon和混合冷凝水的尺寸为$ 10 $的两点总规则方法的上下文计算的。状态的完整宽度$ t_ {cc：s}^{\ mathrm {av}} $可以从对过程的分析中找到$ t_ {cc：s}^{\ mathrm {av}}} \ to d^{0} t_ {cc：s}^{\ mathrm {av}} \ to d^{\ ast}（2007）^{0} d_ {s}^{s}^{+} $。 Decays to $ D^{0}D_{s}^{+}$, $D^{\ast}(2007)^{0}D_{s}^{\ast+}$ and $D^{0}D_{s}^{+}$ mesons are utilized in the case of the scalar tetraquarks $ t_ {cc：s}^{\ mathrm {s}} $和$ \ widetilde {t} _ {cc：s}^{\ mathrm {s s}} $。 The partial widths of the aforementioned decays are determined via the strong couplings $ g_1$, $g_2 $, $G_1$, $G_2$ and $\widetilde{G}$, which describe the strong interactions of the particles at the relevant tetraquark-meson-meson vertices.这些耦合是使用QCD三分总规则方法计算的，最适合研究的强衰变。 ...
The spectroscopic parameters and widths of the axial-vector $T_{cc:s}^{ \mathrm{AV}}$ and scalar $T_{cc:s}^{\mathrm{S}}$, $\widetilde{T}_{cc:s}^{ \mathrm{S}}$ strange partners of the doubly charmed exotic meson $T_{cc}^{+}$ with the content $cc\overline{u}\overline{s}$, are calculated in the framework of the QCD sum rule method. We model $T_{cc:s}^{\mathrm{AV}}$ as the diquark-antidiquark state composed of axial-vector and scalar components, whereas scalar particles $T_{cc:s}^{\mathrm{S}}$ and $\widetilde{ T}_{cc:s}^{\mathrm{S}}$ are built of axial-vector and scalar diquarks, respectively. The masses and current couplings of these tetraquarks are calculated in the context of the two-point sum rule approach by taking into account the quark, gluon and mixed condensates up to dimension $10$. The full width of the state $T_{cc:s}^{\mathrm{AV}}$ is found from analysis of the processes $T_{cc:s}^{\mathrm{AV}} \to D^{0}D_{s}^{\ast +}$ and $ T_{cc:s}^{\mathrm{AV}} \to D^{\ast}(2007)^{0}D_{s}^{+}$. Decays to $ D^{0}D_{s}^{+}$, $D^{\ast}(2007)^{0}D_{s}^{\ast+}$ and $D^{0}D_{s}^{+}$ mesons are utilized in the case of the scalar tetraquarks $T_{cc:s}^{\mathrm{ S}}$ and $\widetilde{T}_{cc:s}^{\mathrm{S}}$, respectively. The partial widths of the aforementioned decays are determined via the strong couplings $ g_1$, $g_2 $, $G_1$, $G_2$ and $\widetilde{G}$, which describe the strong interactions of the particles at the relevant tetraquark-meson-meson vertices. These couplings are computed using the QCD three-point sum rule method, most appropriate for the strong decays under study. ....
