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arXiv 2111.06232hep-ph
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pNRQCD中$P$波重夸克偶素的包容强子产生

Inclusive Hadroproduction of $P$-wave Heavy Quarkonia in pNRQCD

Hee Sok Chung

摘要:

在势NRQCD框架下,我们计算了出现在$P$ -波重夸克偶素的包含产生截面中的NRQCD长距离矩阵元。在这项工作中开发的形式主义适用于强耦合charmonia和bottomonia。这使得有可能确定色八位NRQCD长距离矩阵元素,而不依赖于测量的截面数据,这是迄今为止还不可能的。我们得到的结果包括生产截面的$χ_{cJ}$和$χ_{bJ}$在大型强子对撞机,这是在良好的协议与测量。

英文摘要:

We compute NRQCD long-distance matrix elements that appear in the inclusive production cross sections of $P$-wave heavy quarkonia in the framework of potential NRQCD. The formalism developed in this work applies to strongly coupled charmonia and bottomonia. This makes possible the determination of color-octet NRQCD long-distance matrix elements without relying on measured cross section data, which has not been possible so far. We obtain results for inclusive production cross sections of $χ_{cJ}$ and $χ_{bJ}$ at the LHC, which are in good agreement with measurements.

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