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Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 70: Di-Higgs 2 (4b & other)

T 70.4: Talk

Wednesday, March 6, 2024, 16:45–17:00, Geb. 30.41: HS 1

Sensitivity study on the Higgs trilinear coupling with the ssWWhjj signal at ATLAS — •Lisa Marie Lehmann1,2, Joany Manjarres2, Frank Siegert1, and Maren Bühring11TU Dresden, Institut für Kern- und Teilchenphysik — 2Université Paul Sabatier Toulouse, Laboratoire des 2 Infinis

The exact value of the Higgs boson’s trilinear coupling is of particular interest since it is a central but unknown parameter of the Standard Model (SM) and fundamental to many Beyond SM scenarios. This study probes the sensitivity of Higgs boson production associated with the scattering of same-sign W bosons as a complementary approach to studies of Di-Higgs production to further constrain the value of the trilinear coupling parameter. This project presents the first detector-level study of ssWWhjj in final states with the W bosons decaying leptonically and the Higgs boson decaying into b quarks, using the full simulation of the ATLAS detector corresponding to √s=13 TeV and an integrated luminosity of 140 fb−1. This offers valuable insights into the prospects and potential challenges of this channel.

Keywords: Higgs-trilinear coupling; VVHjj; ATLAS

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