论文标题
EIC和EICC的C-even Quarkonia的光生源
Photoproduction of C-even quarkonia at EIC and EicC
论文作者
论文摘要
$η_c$ $ collision中的$η_c$ podroduction长期以来一直是探测奥德隆存在的理想过程。 In the current work, we systematically investigate the photoproduction of various $C$-even heavy quarkonia (exemplified by $η_{c(b)}$, and $χ_{c(b)J}$ with $J=0,1,2$) via one-photon exchange channel, at the lowest order in $α_s$ and heavy quark velocity in the context of NRQCD factorization.我们发现，通过这种机制，$ c $ the Quarkonia的光增生率与通过Odderon发起的机制（即使在Regge极限（$ s \ gg -t $）中）相当，尽管后者的预测类型受到了相当大的理论不确定性的影响。 \ texttt {eic}和\ texttt {eICC}中这些类型的Quarkonium光生生产过程的未来测量对于确定哪种机制起着主要的作用至关重要。
The $η_c$ photoproduction in $ep$ collision has long been proposed as an ideal process to probe the existence of odderon. In the current work, we systematically investigate the photoproduction of various $C$-even heavy quarkonia (exemplified by $η_{c(b)}$, and $χ_{c(b)J}$ with $J=0,1,2$) via one-photon exchange channel, at the lowest order in $α_s$ and heavy quark velocity in the context of NRQCD factorization. We find that the photoproduction rates of the $C$-even quarkonia through this mechanism are comparable in magnitude with that through the odderon-initiated mechanism, even in the Regge limit ($s\gg -t$), though the latter types of predictions suffers from considerable theoretical uncertainties. The future measurements of these types of quarkonium photoproduction processes in \texttt{EIC} and \texttt{EicC} are crucial to ascertain which mechanism plays the dominant role.
