Conveners
Higgs & related indirect BSM 9
- Hongtao Yang (USTC)
Long-lived particles (LLPs) originating from decays of Standard-Model-like or beyond-the-Standard-Model Higgs bosons are often featured with signatures of displaced vertices (DVs) and jets at colliders. In this work, we show that a recent ATLAS search for DVs plus jets, with its recast implementation, can efficiently place bounds on such hadronically or semileptonically decaying LLPs. In...
Ref. ATLAS-CONF-2025-012
This note presents a combination of searches for Higgs boson pair (HH) production performed by the ATLAS and CMS Collaborations using proton-proton collision data sets recorded at $\sqrt{s}$ = 13 TeV at the LHC Run 2, corresponding to integrated luminosities ranging between 126 and 140 fb$^{-1}$. The upper limit at the 95% confidence level on the total HH production...
Recent measurements of single top-Higgs (tH) production at the LHC show consistent excesses above Standard Model predictions across multiple decay channels. While still statistically limited, these observations are intriguing given tH's unique sensitivity to the relative sign between top Yukawa and W boson couplings. This talk summarizes the current experimental landscape, and ongoing...
I will present a new jet-free strategy for the $HH \to 4b$ search at the LHC that enhances sensitivity by more than a factor of five compared with current approaches. The method uses all-particle inputs to jointly identify $h_1 h_2 \to 4b$ across variable Higgs-candidate masses and to estimate $(m_{h_1}, m_{h_2})$ via a mass-decorrelated multiclass classifier. A key feature is that the $HH$...
ATLAS and CMS experiments have confirmed Higgs boson’s role in giving mass to the weak bosons and 3rd generation charged fermions. However, whether the other generations of fermions acquire mass through the same mechanism remains an open question. The Higgs boson’s decay to a pair of muons provides a direct probe of its Yukawa coupling to second-generation fermions. In this talk, I will...
