论文标题
FCC-HH的Diphoton ZH通道的精度
Precision from the diphoton Zh channel at FCC-hh
论文作者
论文摘要
未来的100 TEV FCC-HH强子对撞机将提供罕见但干净的最终状态，而HL-LHC无法触及。一个这样的过程是$（ν\barν / \ ell^{+} \ ell^{ - }）γγ$最终状态中的$ ZH $生产通道。我们研究此通道对$ \ Mathcal {o} _ {φQ}^{（1）} $，$ \ Mathcal {o} _ {φQ}^{（3）} $，$ \ nmatcal {o} _ {O} _ {o} _ {φu} $}操作员，将$ W $和$ z $耦合的偏差与夸克的偏差进行了参数，或者等效地是异常的三线性量规耦合（ATGC）。虽然我们的分析表明，良好的敏感性仅适用于$ \ Mathcal {o} _ {φq}^{（3）} $，但我们证明了$ ZH $ rapidity中的binning有可能提高$ \ MATHCAL {O} {O} {O} _ {φQ} _ {φQ}^^{（1）$的覆盖范围。我们的估计界限比HL-LHC的预测要好一个数量级，并且比未来Lepton Colliders的全球拟合要好。对$ \ Mathcal {O} _ {φQ}^{（3）} $的敏感性与其他可以在FCC-HH上探测同一运算符的通道竞争。因此，结合不同的Diboson通道均匀地改善了$ \ Mathcal {o} _ {φQ}^{（3）} $上的界限，达到$ |ΔG_{1Z} |的精度\ Lessim 2 \ times 10^{ - 4} $在$ zww $互动中的偏差上。
The future 100 TeV FCC-hh hadron collider will give access to rare but clean final states which are out of reach of the HL-LHC. One such process is the $Zh$ production channel in the $(ν\barν / \ell^{+}\ell^{-})γγ$ final states. We study the sensitivity of this channel to the $\mathcal{O}_{φq}^{(1)}$, $\mathcal{O}_{φq}^{(3)}$, $\mathcal{O}_{φu}$, and $\mathcal{O}_{φd}$ SMEFT operators, which parametrize deviations of the $W$ and $Z$ couplings to quarks, or, equivalently, anomalous trilinear gauge couplings (aTGC). While our analysis shows that good sensitivity is only achievable for $\mathcal{O}_{φq}^{(3)}$, we demonstrate that binning in the $Zh$ rapidity has the potential to improve the reach on $\mathcal{O}_{φq}^{(1)}$. Our estimated bounds are one order of magnitude better than projections at HL-LHC and is better than global fits at future lepton colliders. The sensitivity to $\mathcal{O}_{φq}^{(3)}$ is competitive with other channels that could probe the same operator at FCC-hh. Therefore, combining the different diboson channels sizeably improves the bound on $\mathcal{O}_{φq}^{(3)}$, reaching a precision of $|δg_{1z}| \lesssim 2 \times 10^{-4}$ on the deviations in the $ZWW$ interactions.
