AI 中文总结
研究未来μ子 - 质子对撞机通过μ⁺p→ν̅μX→ν̅μtW⁺过程探测类矢量X夸克的潜力，采用简化模型，经蒙特卡罗分析，考虑多通道及极化束与相关技术，发现质心能量和RL值增大可提高灵敏度，不同通道灵敏度有差异。
AI 中文摘要
我们研究了未来μ子 - 质子（μp）对撞机上通过μ⁺p→ν̅μX→ν̅μtW⁺过程探测类矢量X夸克（VLX）的发现潜力。采用简化有效模型，其中VLX的产生和衰变由耦合强度g*、代混合参数RL和VLX质量mX控制。在√s = 5.29、6.48和9.16 TeV进行综合蒙特卡罗分析，考虑四个互补衰变通道。使用80%极化μ子束和基于胖喷注技术的增强对象重建提高信号灵敏度。用阿西莫夫显著性评估预期排除和发现范围。发现随着质心能量增加和RL值增大，灵敏度可大幅提高。四个通道中，FH模式灵敏度最强，FL模式最弱。结果表明未来μp对撞机能在广泛参数空间对重VLX提供显著灵敏度。
英文摘要
We investigate the discovery potential for the vector-like $X$-quark (VLX) at future muon--proton ($μp$) colliders through the process $μ^+ p \to \barν_μX \to \barν_μt W^+$. A simplified effective model is adopted in which the production and decay of the VLX are governed by the coupling strength $g^{*}$, the generation-mixing parameter $R_{L}$, and the VLX mass $m_X$. A comprehensive Monte Carlo analysis is performed at $\sqrt{s}=5.29$, $6.48$, and $9.16\ \mathrm{TeV}$, considering four complementary decay channels: the Fully Leptonic (FL), Fully Hadronic (FH), and two Semi-Leptonic (SL1 and SL2) modes. An $80\%$ polarized muon beam together with boosted-object reconstruction based on fat-jet techniques is employed to improve the signal sensitivity. The expected exclusion and discovery reaches are evaluated using the Asimov significance. We find that the sensitivity can be improved substantially with increasing center-of-mass energy and larger values of $R_L$. Among the four channels, the FH mode provides the strongest sensitivity, reaching a $2σ$ exclusion limit of $m_X\simeq8.3\ \mathrm{TeV}$ with $g^* = 0.009 $ for $R_L=0.1$ at $\sqrt{s}=9.16\ \mathrm{TeV}$, whereas the FL mode gives the weakest reach because of its smallest branch ratio. These results demonstrate that future $μp$ colliders can offer significant sensitivity to heavy VLX over a broad region of parameter space.
Comments38 pages, 15 figures,18 tables
