摘要
This letter reports on the first evidence of Higgs-boson production at high transverse momentum in the$b\bar{b}$final state, reconstructed in a single large-radius jet. The results are based on proton proton collision data recorded by the ATLAS detector at the Large Hadron Collider at a centre-of-mass energies of 13 TeV and 13.6 TeV, corresponding to a total integrated luminosity of 301 fb $^{-1}$ . The study profits from the large background suppression provided by the use of a new transformer-based algorithm for jet identification and the sharper mass and transverse momentum,$p_{\text{T}}$ , resolution from a dedicated regression model. The yield relative to the Standard Model prediction, for Higgs bosons produced at$p_{\text{T}}$larger than 450 GeV is measured to be$1.53\pm 0.27\text{(stat.)}\ ^{+0.33}_{-0.27}\text{(syst.)}\pm 0.17\text{(theo.)}$corresponding to an observed (expected) significance of$3.8σ(2.5σ)$relative to the background-only hypothesis. Results are also obtained in three Higgs boson$p_{\text{T}}$intervals and found to be compatible with Standard Model predictions.