اشترك بالحزمة الذهبية واحصل على وصول غير محدود شمرا أكاديميا
تسجيل مستخدم جديد$Upsilon$ electroproduction at HERA, EIC, and LHeC within the nonrelativistic QCD framework
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تأليف
Zhan Sun
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Based on the nonrelativistic QCD framework, we study the $Upsilon$ production in semi-inclusive deep inelastic electron-proton scattering (SIDIS) at HERA, EIC, and LHeC, with the main aim of assessing the viability of observing $Upsilon$ electroproduction at the three colliders. The color-octet (CO) contributions are found to have a crucial effect on both the integrated and differential cross sections, serving to further establish the significance of the CO mechanism. By setting the kinematic cuts to $p_{t,Upsilon}^{star 2}>1~textrm{GeV}^{2}$, $W>50$ GeV, $2<Q^2<100~textrm{GeV}^2$, and $0.3<z<0.9$, only a few electroproduced $Upsilon$ events can be generated at HERA, partially accounting for its lack of measured $Upsilon$ electroproduction. However, under the same cut conditions, the EIC and LHeC can accumulate about $8.7times10^{2}$ and $3.7times10^{4}$ reconstructed $Upsilon$ events in one operation year, respectively, which manifestly indicates the prospect of detecting the $Upsilon$-related SIDIS processes at the two forthcoming $ep(eA)$ colliders.
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Hong-Fei Zhang (College of Big Data Statistics
, Guizhou University ofn Finance
, Economics
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