Probing Higher-Dimensional Wilson Operators in the VVV Production and opportunities for Run3 using the scouting dataset.

• Garyfallia Paspalaki (Purdue University (US))

The study of multi-boson production at the LHC provides a powerful way to probe the self-interactions of the electroweak gauge bosons and to search for signs of physics beyond the Standard Model (BSM). In this seminar, I will present a search for the production of three massive vector bosons (VVV, where V=W,Z) in final states with boosted kinematics, in which each boson has transverse momentum above 200 GeV. Hadronically decaying W or Z bosons are reconstructed as large-radius, V-tagged jets using jet substructure and dedicated tagging techniques. The results are interpreted in the framework of the Standard Model Effective Field Theory (SMEFT), setting limits on Wilson coefficients of relevant dimension-6 and dimension-8 operators. I will also discuss the Run3 opportunities in the VVV search, which includes the use of alternative data streams (scouting data) with the use of a global particle transformer (scouting GloParT) classifier.