在电子强子设施上的XYZ光谱学:排斥过程
XYZ spectroscopy at electron-hadron facilities: Exclusive processes
摘要:
下一代电子强子设施有可能大大提高我们对奇异强子的理解。到目前为止,在光子诱导反应中还没有看到XYZ态。他们对这些进程的观察将独立地证实这些进程的存在,并为了解其内部结构提供新的见解。基于已知的实验数据和已被公认的夸克偶素和Regge唯象,我们给出了几个XYZ态的排他性截面的估计。对于阈值附近的能量,我们预计Zc(3900)+的截面为几个纳米带,X(3872)的截面为几十个纳米带,这完全在新设施的范围内。
英文摘要:
The next generation of electron-hadron facilities has the potential for significantly improving our understanding of exotic hadrons. The XYZ states have not been seen in photon-induced reactions so far. Their observation in such processes would provide an independent confirmation of their existence and offer new insights into their internal structure. Based on the known experimental data and the well-established quarkonium and Regge phenomenology, we give estimates for the exclusive cross sections of several XYZ states. For energies near threshold we expect cross sections of few nanobarns for the Zc(3900)+ and upwards of tens of nanobarn for the X(3872), which are well within reach of new facilities.
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