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arXiv 2301.03261hep-ph
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LHeC和FCC-he能量范围内的顶部横截面

Top cross section in the LHeC and FCC-he energy range

G. R. Boroun

摘要:

用微扰量子色动力学(QCD)的首阶近似(LO)和次首阶近似(NLO)对未来强子-电子(FCC-he)和大型强子-电子对撞机(LHeC)上电子-质子(ep)碰撞的顶对产生截面进行了预测.在重正化标度$μ^{2}=Q^{2}+4m^{2}_{t}$下,采用共线广义双渐近标度(DAS)方法计算了顶层结构函数和结构函数比的数值结果。这些结果的有效参数的参数化的$F_{2}(x,Q^{2})$,依赖于一个Froissart-bounded。这些定量结果对未来质心能量前沿的对撞机实验和改进超高能宇宙线级联发展的唯象模型具有重要意义。由于共线部分子分布函数(PDF)的幂律行为$x^{-Δ}$、因子分解和重整化标度,我们获得了FCC中心在高非弹性下的顶部性质的不确定性质量(CM)能量在NLO近似下。

英文摘要:

Predictions of the top-pair production cross section in electron-proton (ep) collisions at the future circular collider hadron-electron (FCC-he) and the large hadron electron collider (LHeC) in the leading order (LO) and the next-to-leading order (NLO) approximations in perturbative quantum chromodynamics (QCD) are presented. Numerical results for the top structure functions and the ratio of structure functions are computed at the renormalization scale $μ^{2}=Q^{2}+4m^{2}_{t}$ in the collinear generalized double asymptotic scaling (DAS) approach. These results are presented in terms of the effective parameters of the parameterization of $F_{2}(x,Q^{2})$, where relying on a Froissart-bounded. These quantitative results can be important for future collider experiments at the center-of-mass energy frontier and the improvement of the phenomenological models for the development of the cosmic ray cascades in ultra-high-energy domain. We obtained the uncertainties because of the power-law behavior $x^{-Δ}$ of the collinear parton distribution functions (PDFs), the factorization, and renormalization scales, on the top properties at high inelasticity for the FCC-he center-of-mass (CM) energy at the NLO approximation.

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