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arXiv 2602.18809hep-ph
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未来电子-质子对撞机顶夸克对产生量的限制

A limit on top quark pair production at future electron-proton colliders

Razi University(拉齐大学)

G. R. Boroun

AI总结:

研究未来电子-质子对撞机中顶夸克对产生量的限制,通过分析结构函数比率和缩减截面,建立基于重整化尺度的约束条件。

摘要:

在未来的电子-质子对撞机中,深度非弹性散射中顶夸克对产生结构函数的比率在固定√s和Q²以及相对于由Q²/s给出的最小x值的情况下,利用共线因子化进行分析。这个紧凑的公式对于F_{L2}(Q²/s,Q²,m_t)比率是有用的,可用于提取顶结构函数的限制。在此限制下的顶产生缩减截面被确定,从而在LHeC和FCC-eh中心束能上建立了顶夸克对产生量的限制值,基于重整化尺度。对Bjorken缩放的修改被应用于该限制的顶截面在重整化尺度μ²=Q²+4m_t²下的情况,这在Q²<4m_t²时提高了缩放量。在广泛的色偶极子尺寸范围内,即r,对顶夸克对产生的色偶极子截面进行了检查。根据此限制行为,预计未来电子-质子对撞机在观察顶饱和时将表现出有限的行为。Higgs玻色子在γ*g相互作用中的概率与gg过程在α^{em}/α_s的顺序上进行了比较。

英文摘要:

The ratio of the structure functions for deep inelastic scattering in top pair production at future electron-proton colliders is analyzed at a fixed $\sqrt{s}$ and $Q^2$ relative to the minimum value of $x$ given by $Q^2/s$ using collinear factorization. This compact formula for the ratio $F_{L2}(Q^2/s,Q^2,m_{t})$ is useful for extracting a bound on the top structure function. The reduced cross-section for top production at this limit is determined, establishing a bound value for $t\overline{t}$ production at the LHeC and FCC-eh center-of-mass energies based on renormalization scales. The modification of the Bjorken scaling is applied to this bound of the reduced top cross-section at the renormalization scale $μ^2=Q^2+4m_{t}^{2}$, which improves the scaling quantity at $Q^2{<}4m_{t}^{2}$. The dipole cross-section for top pair production is examined across a wide range of dipole sizes, denoted as $r$. It is expected that there will be limited behavior in observing top saturation in future electron-proton colliders according to the bound behavior. The probability of the Higgs boson in $γ^{*}g$ interactions is compared to the $gg$ process at the order of $\mathcal{O}(α^{\mathrm{em}}/α_{s})$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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