反粒子束偏振对轻子夸克产生及对撞机实验参数的影响
Impact of Colliding Beams Helicity on the Production of Leptoquarks and Collider Experimental Parameters
AI总结：
本文研究反粒子束偏振对轻子夸克产生及对撞机实验参数的影响，通过优化束偏振提升信号灵敏度，并展示左-右不对称性在新物理手性结构中的判别作用。
摘要：
向量轻子夸克（VLQs）已出现为解决标准模型中不一致现象的主要候选者，特别是在B介子衰变通道和μ子异常磁矩中。本文提出了对VLQ对产生在未来的线性对撞机上进行严格评估，中心对撞能范围从14 TeV到100 TeV。我们的分析表明，纵向束偏振是增强信号灵敏度的变革性工具。我们发现，在500-3000 GeV的质量范围内，电子-正电子湮灭过程的截面比光子融合过程始终更优。通过优化束偏振到特定配置，如e⁻偏振为-0.8和e⁺偏振为+0.6，可以在√s=3 TeV时将产生截面最大化至120 fb。此外，我们还证明了左-右不对称性（A_LR）作为新物理手性结构的稳健判别器，在完全偏振下达到0.16峰值。此外，我们还表明有效亮度可以提高到总亮度的95%，而高偏振度显著抑制有效偏振的相对误差。这些结果为未来高能物理实验优化发现潜力和最小化系统误差提供了定量路线图。
英文摘要：
Vector Leptoquarks (VLQs) have emerged as primary candidates for resolving discrepancies in the Standard Model, specifically within $B$-meson decay channels and the anomalous magnetic moment of the muon. This work presents a rigorous evaluation of VLQ pair production across $e^{-}e^{+}$ collision modes at future linear colliders with center-of-mass energies ranging from 14~TeV to 100~TeV. Our analysis demonstrates that longitudinal beam polarization is a transformative tool for enhancing signal sensitivity. We find that $e^{-}e^{+}$ annihilation consistently yields superior cross-sections compared to photon fusion processes across a mass range of 500--3000~GeV. By optimizing beam helicity to specific configurations, such as $P_{e^{-}} = -0.8$ and $P_{e^{+}} = +0.6$, the production cross-section can be maximized to 120~fb at $\sqrt{s} = 3$~TeV. We further establish that the Left-Right Asymmetry ($A_{LR}$) serves as a robust discriminator for the chiral structure of new physics, peaking at 0.16 under full polarization. Additionally, we show that effective luminosity can be enhanced to 95\% of the total luminosity, while high polarization degrees significantly suppress relative uncertainties in the effective polarization. These results provide a quantitative roadmap for optimizing discovery potential and minimizing systematic errors in future high-energy physics experiments.
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