Probing Higgs width ${\mathrm{\Gamma }}_h$ is critical to test the Higgs properties. In this work we propose to measure ${\mathrm{\Gamma }}_h$ at the $e^{+}{e}^{-}$ collider with a model-independent analysis under the Standard Model Effective Field Theory framework. We demonstrate that making use of the cross section measurements from $e^{+}{e}^{-}\to Zh$, $e^{+}{e}^{-}\to {\nu }_e{\overline{\nu }}_{e}h$ production and Higgs decay branching ratios $h\to W{W}^{⁎}/Z{Z}^{⁎}$, one could determine ${\mathrm{\Gamma }}_h$ at a percentage level with a center of mass energy $\sqrt{s}=250$ and 350 GeV and integrated luminosity $5{\mathrm{ab}}^{-1}$. This conclusion would not depend on the assumption of the fermion Yukawa interactions. We further apply this result to constrain the fermion Yukawa couplings and it shows that the couplings could be well constrained.

探测希格斯宽度 ${\mathrm{\Gamma }}_H$是测试希格斯特性的关键。在这项工作中，我们建议测量${\mathrm{\Gamma }}_H$ 在 ${\mathrm{电子}}^{+}{\mathrm{电子}}^{-}$在标准模型有效场论框架下与模型无关的分析碰撞。我们证明了利用来自${\mathrm{电子}}^{+}{\mathrm{电子}}^{-}\to ZH$, ${\mathrm{电子}}^{+}{\mathrm{电子}}^{-}\to {\nu }_{\mathrm{电子}}{\overline{\nu }}_{\mathrm{电子}}H$ 产生和希格斯衰变分支比 $H\to 宽{宽}^{⁎}/Z{Z}^{⁎}$，可以确定 ${\mathrm{\Gamma }}_H$ 在具有质心能量的百分比水平 $\sqrt{秒}=250$ 和 350 GeV 和集成光度 $5{\mathrm{AB}}^{-1}$. 这个结论不依赖于费米子汤川相互作用的假设。我们进一步应用这个结果来约束费米子汤川耦合，它表明耦合可以被很好地约束。