arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1402.6887hep-ph
收藏

用QCD求和规则分析强$D_{2}^{*}(2460)^{0}\rightarrow D^+ π^- $和$D_{s2}^{*}(2573)^{+}\rightarrow D^{+} K^{0}$跃迁

Analysis of the strong $D_{2}^{*}(2460)^{0}\rightarrow D^+ π^- $ and $D_{s2}^{*}(2573)^{+}\rightarrow D^{+} K^{0}$ transitions via QCD sum rules

K. Azizi, Y. Sarac, H. Sundu

摘要:

利用三点QCD求和规则分析了强$D_{2}^{*}(2460)^{0}\rightarrow D^+ π^- $和强$D_{s2}^{*}(2573)^{+}\rightarrow D^{+} K^{0}$跃迁。首先,我们计算了相应的强耦合常数$g_{D_2^*Dπ}$和$g_{D_{s2}^*DK}$。然后,我们使用它们来计算相应的衰变宽度和分支比。最后,利用已有的赝标$D$通道与矢量$D^*$通道的衰变宽度之比的实验数据,估计了强$D_2^*(2460)^0 \rightarrow D^*(2010)^+π^-$跃迁的衰变宽度和分支比.

英文摘要:

The strong $D_{2}^{*}(2460)^{0}\rightarrow D^+ π^- $ and $D_{s2}^{*}(2573)^{+}\rightarrow D^{+} K^{0}$ transitions are analyzed via three point QCD sum rules. First, we calculate the corresponding strong coupling constants $g_{D_2^*Dπ}$ and $g_{D_{s2}^*DK}$. Then, we use them to calculate the corresponding decay widths and branching ratios. Making use of the existing experimental data on the ratio of the decay width in the pseudoscaler $D$ channel to that of the vector $D^*$ channel, finally, we estimate the decay width and branching ratio of the strong $D_2^*(2460)^0 \rightarrow D^*(2010)^+π^-$ transition.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑