Speaker
Description
The addition of a heavy charged vector gauge boson $\mathrm{W}^\prime$ to the Standard Model (SM) with negligible quark couplings ("quarkophobic") and triple gauge couplings can address issues with the SM, such as the B-meson anomalies and recent discrepancies in the W boson mass measurements. Such a model featuring a large $\mathrm{W}^\prime$ decay width has not yet been explored at the LHC and would be challenging to probe using conventional methods, necessitating the development of innovative search strategies.
In this talk, we present a novel study probing $\mathrm{W}^\prime$ production through weak boson fusion in proton-proton collisions at the LHC, operating under a simplified model with a large $\mathrm{W}^\prime$ decay width and considering final states with two jets, large missing transverse momentum, and one light lepton. Notably, we use point cloud learning for the first time in a BSM search—specifically, a novel Lorentz-Equivariant Geometric Algebra Transformer—providing significant improvement in signal sensitivity compared to traditional methods. Using our methodology, a quarkophobic $\mathrm{W}^\prime$ with triple gauge couplings decaying to a lepton and neutrino can be probed with masses up to 4.45 TeV, depending on the couplings to SM leptons and weak bosons.
