论文标题
$ d d a $，$ d^{*} d^{*} a $ and $ d^{*} d a $ vertices in Light-cone qcd，并考虑$ b^0 \ to {k} _ {1} _ {1}^{+}^{+}π^ - $分支比例
$D D A$, $D^{*}D^{*}A$ and $D^{*} D A$ vertices in the light-cone QCD and considering $B^0\to {K}_{1}^{+} π^-$ branching ratio
论文作者
论文摘要
We investigate the strong coupling constants of $D D A$, $D^{*}D^{*}A$ and $D^{*} D A$ vertices in the framework of the light-cone QCD sum rules, where $A$ is an axial vector meson such as $a_1, b_1, K_{1A}, K_{1B}, K_1(1270)$ and $ k_1（1400）$。使用$ d_s d k_1 $，$ d_s^* d k_1 $和$ d_s^* d^* k_1 $ vertices for $ k_1（1270）$和$ k_1（1400）$ Mesons的强耦合常数，$ d_s^* d k_1 $和$ d_s^* d^* k_1 $ vertices，我们评估了非lecterponic decays $ b^0 \ to \ to {k} _ {1}^{+}（1270,1400）π^ - $。我们对这些衰减的分支比率的结果与实验值有很好的一致性。
We investigate the strong coupling constants of $D D A$, $D^{*}D^{*}A$ and $D^{*} D A$ vertices in the framework of the light-cone QCD sum rules, where $A$ is an axial vector meson such as $a_1, b_1, K_{1A}, K_{1B}, K_1(1270)$ and $K_1(1400)$. Using the strong coupling constants of $D_s D K_1$, $D_s^* D K_1$ and $D_s^* D^* K_1$ vertices for $K_1(1270)$ and $K_1(1400)$ mesons, we evaluated the branching ratios of the non-leptonic decays $B^0\to {K}_{1}^{+}(1270,1400) π^-$. Our results for the branching ratios of these decays are a good agreement with the experimental values.
