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arXiv 2209.08548hep-ph
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奇异bottomonium强子跃迁

Exotic bottomonium hadronic transitions

Jaume Tarrús Castellà

摘要:

我们报告了最近的一个奇异的bottomonium到标准bottomonium和轻夸克强子跃迁的计算。我们工作的假设下,$Υ(10753)$和$Υ(11020)$可以被描述为最低层和第一个激发$1^{--}$混合bottomonium状态,分别。计算有两个不同的部分:重夸克跃迁矩阵元,这是在一个非相对论EFT结合重夸克,多极和绝热膨胀;和强子化的胶子运营商到轻介子的最终状态。通过轴向反常和标准的$π^0-η-η'$混合方案得到了单介子的产生。通过求解耦合的Omnès问题得到了两个π介子和K介子的产生。我们还提出了半包容过渡的结果。

英文摘要:

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.

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。

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