论文标题
在Muon对撞机的顶级Yukawa耦合
Top Yukawa Coupling at the Muon Collider
论文作者
论文摘要
我们已经介绍了一项详细的研究，该研究涉及在高能量muon Colliders上生产矢量玻色子融合（VBF）生产的矢量玻色子融合（VBF）生产中最高的Yukawa耦合的前景。通过采用有效的$ W $近似值和subprocess $ W^+ W^ - \ rightArrow t \ bar t $的螺旋度振幅的高能量限制，我们在存在异常耦合的情况下得出了统计信号显着性的能量缩放。随着垃圾箱能量的增加，顶部Yukawa耦合的敏感性会降低。对于异常的三重量规玻色子耦合和具有$ e^2 $能量增长行为的仪表 - 玻色子纤维耦合，对于干扰项而言，信号意义在开始时有轻微的增加，并且开始减少$ \ hat s_ {t \ bar t \ bar t}} \ sim 0.2 \ sim 0.2 \，s______________ {μ^+μ^+μ^ - μ^ - }。 95 \％C.L.在异常的顶部，Yukawa的耦合预计在10（30）Tev Muon Collider上为5.6 \％（1.7 \％），这与100 TEV碰撞者的2 \％的灵敏度相当。
We have presented a detailed study about the prospects for the measurement of the top Yukawa coupling in the vector boson fusion (VBF) production of a top quark pair at high energy muon colliders. By employing the effective $W$ approximation and the high energy limit for the helicity amplitudes of the subprocess $W^+ W^- \rightarrow t \bar t$, we have derived the energy scaling of the statistical signal significance in the presence of the anomalous couplings. The sensitivity on the top Yukawa coupling decreases as the bin energy increases. For the anomalous triple gauge boson couplings and the gauge-boson-fermion couplings with $E^2$ energy growing behavior for the interference term, the signal significance has mild increase at the beginning and start to decrease for $\hat s_{t \bar t} \sim 0.2 \, s_{μ^+ μ^-} $. The 95\% C.L. on the anomalous top Yukawa coupling is projected to be 5.6\% (1.7\%) at a 10 (30) TeV muon collider, which is comparable to the sensitivity of 2\% at the 100 TeV collider.
