论文标题
奇特的底元过渡
Exotic bottomonium hadronic transitions
论文作者
论文摘要
我们报告了最近对异国情调底部向标准底部和轻夸克黑龙的过渡的计算。我们假设$υ（10753）$和$购（11020）$可以描述为最低的铺设和第一次激发$ 1^{ - }。该计算有两个不同的部分：重型夸克过渡矩阵元素，这些元素是在包含重夸克，多产和绝热膨胀的非依赖性的EFT中获得的； Gluonic操作员在轻膜的最终状态中进行了强调。单个介子的产生是通过轴向异常和标准$π^0-η-η'$混合方案获得的。通过解决耦合的omnès问题，获得了两种Pion和Kaon的产生。我们还提出了半刻度过渡的结果。
We report on a recent computation of the transitions of exotic bottomonium to standard bottomonium and light quark hadrons. We work under the assumption that the $Υ(10753)$ and $Υ(11020)$ can be described as the lowest laying and first excitation $1^{--}$ hybrid bottomonium states, respectively. The computation has two distinct parts: the heavy quark transition matrix elements, which are obtained in a nonrelativistic EFT incorporating the heavy quark, multipole and adiabatic expansions; and the hadronization of the gluonic operators into the light-meson final states. The single mesons production is obtained through the axial anomaly and a standard $π^0-η-η'$ mixing scheme. Two pion and kaon production is obtained by solving the coupled Omnès problem. We also present result for semi-inclusive transitions.
