Investigating vector boson scattering: A fully gauge-invariant study

Abstract

Vector boson scattering (VBS) plays a central role in the search for new physics at collider experiments such as ATLAS and CMS at the LHC. Usually predictions for this kind of processes are obtained using perturbative approaches in fixed gauges. Here we present a fully gauge-invariant study of VBS in the scalar-channel involving a SM-like Higgs with finite extent. To this end, we combine results obtained in a reduced SM setup from (augmented) perturbation theory with those from non-perturbative lattice simulations.

Multi-hadron interactions from lattice QCD

“…Lattice QCD offers the prospect of determining multi-hadron quantities and resonance properties from first principles [10]. This is an active area of research, as evidenced by the numerous contributions on this topic at the Lattice 2022 conference [11][12][13][14][15][16][17][18][19][20][21][22][23]. More formally, the problem can be formulated as constraining the QCD Scattering Matrix (S-Matrix), Ŝ, from lattice QCD.…”