Recent searches for Higgs boson pair production at ATLAS -- Katharine Leney (SMU)

Tuesday 9 Apr 2024, 12:30 → 13:30 America/Los_Angeles

48/2-224 - Madrone (SLAC)

Since the discovery of the Higgs boson by the ATLAS and CMS Collaborations in 2012, a major focus in particle physics has been understanding its interactions.  Tremendous progress has been made in determining the strength of the Higgs bosons couplings to fermions and vector bosons, but its self‐interaction has yet to be established.  Understanding the Higgs self‐coupling and the form of the potential function of the Higgs field will allow us to explore why the Higgs boson acquires a vacuum expectation value, and, critically, whether we live in a stable universe.  The most natural way to probe the Higgs self‐interaction is via searches for Higgs boson pair‐production, HH.  I will report on the the latest results of HH searches from the ATLAS experiment.  In the case of non-resonant HH searches, results are interpreted both in terms of sensitivity to the Standard Model and as constraints on couplings.  Search results on new resonances decaying into pairs of Higgs bosons are also reported.
 

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ATLAS_HH_KLeney.pdf

video1186750238.mp4