论文标题
在ILC的$HγZ$耦合的研究
Study of the $h γZ$ coupling at the ILC
论文作者
论文摘要
我们使用逼真的检测器模型研究了$ e^+e^ - \ toHγ$过程，使用现实的检测器模型研究了在ILC上限制Sm有效场理论（SMEFT）$HγZ$系数的可行性。假设国际大型检测器（ILD）在250 GEV ILC下运行，则表明$ e^+e^ - \ forHγ$过程要比没有BSM贡献的预期要难得多得多。因此，我们在此过程的横截面上放大了上限。预期的95％C.L.完整极性的上限$（p_ {e^ - }，p_ {e^+}）=（ - 100 \％，+100 \％）$和$（+100 \％，-100 \％）$为$ \ frac {σ_ $ \ frac {σ_{Hγ}^{r}} {σ_{s m}^{r}}} <61.9 $。结果95％C.L. $ζ_{az} $的限制为$ -0.020 <ζ_{a z} <0.003 $。
We studied the $e^+e^- \to h γ$ process at the full simulation level, using a realistic detector model to study the feasibility to constrain the SM effective field theory (SMEFT) $h γZ$ coefficient, $ζ_{AZ}$, at the ILC. Assuming International Large Detector (ILD) operating at 250 GeV ILC, it is shown that the $e^+e^- \to hγ$ process is much more difficult to observe than naively expected if there is no BSM contribution. We thus put upper limits on the cross section of this process. The expected combined 95% C.L. upper limits for full polarisations $(P_{e^-}, P_{e^+})=(-100\%, +100\%)$ and $(+100\%, -100\%)$ are $\frac{σ_{h γ}^{L}}{σ_{S M}^{L}}<5.0$ and $\frac{σ_{h γ}^{R}}{σ_{S M}^{R}}<61.9$, respectively. The resultant 95% C.L. limit on $ζ_{AZ}$ is $-0.020<ζ_{A Z}<0.003$.
