Speaker
莫岑
Description
"Higgs boson pair production (HH) probes the Higgs boson self-coupling and the structure of the Higgs potential. This talk presents the ATLAS search for non-resonant HH production in the bbττ final state using the full Run 2 dataset and a partial Run 3 dataset.
The measured signal strength relative to the Standard Model (SM) prediction is $\mu_{HH}$ = 2.6, with uncertainties of +1.4 and −1.0, consistent with the SM expectation. The observed (expected) signal significance is 2.6 (1.2) standard deviations. The self-coupling modifier $\kappa_\lambda$ is constrained at 95% confidence level to [−3.4, 1.6] and [5.5, 10.1]. Additional measurements of the ZH and ZZ processes are also presented as a validation of the analysis strategy."