We set constraints on the trilinear Higgs boson self-coupling, ${\lambda }_3$, by combining the information coming from the W mass and leptonic effective Weinberg angle, electroweak precision observables, with the single Higgs boson analyses targeting the $\gamma \gamma ,Z{Z}^{⁎},W{W}^{⁎},{\tau }^{+}{\tau }^{-}$ and $\overline{b}b$ decay channels and the double Higgs boson analyses in the $b\overline{b}b\overline{b},b\overline{b}{\tau }^{+}{\tau }^{-}$ and $b\overline{b}\gamma \gamma$ decay channels, performed by the ATLAS collaboration. With the assumption that the new physics affects only the Higgs potential, values outside the interval $-1.8{\lambda }_3^{\mathrm{SM}}<{\lambda }_3<9.2{\lambda }_3^{\mathrm{SM}}$ are excluded at 95% confidence level. With respect to similar analyses that do not include the information coming from the electroweak precision observables our analysis shows a stronger constraint on both positive and negative values of ${\lambda }_3$.

我们对三线性希格斯玻色子自耦合设定了约束， ${\lambda }_3$，通过将来自W质量和轻子有效Weinberg角的信息相结合，可以观察到电弱的精确观测值，并针对单个的希格斯玻色子分析$\gamma \gamma ，ž{ž}^{⁎}，\mathrm{w\; ^}{\mathrm{w\; ^}}^{⁎}，{\tau }^{+}{\tau }^{-}$ 和 $\overline{b}b$ 衰变通道和双重希格斯玻色子分析 $b\overline{b}b\overline{b}，b\overline{b}{\tau }^{+}{\tau }^{-}$ 和 $b\overline{b}\gamma \gamma$衰减通道，由ATLAS合作完成。假设新物理学仅影响希格斯势，则区间外的值$-1.8{\lambda }_3^{\mathrm{SM}}<{\lambda }_3<9.2{\lambda }_3^{\mathrm{SM}}$被排除在95％置信水平。对于不包括来自电弱精度可观察到的信息的类似分析，我们的分析显示出对正值和负值的更强约束${\lambda }_3$。