Discovering New Alternatives to the Standard Higgs Boson at the Large Hadron Collider.

[摘要] We discuss new alternatives to the standard model Higgs boson. First we discuss higgsless models that use the recently proposed phenomenon of classicalization to unitarize WW scattering. In these theories high energy longitudinal WW scattering leads to formation of classical configurations of the W-field, called classicalons that decay to multiple Ws.We show that classicalons decay thermodynamically and thus extract concrete predictions for the Large Hadron Collider (LHC). The other major topic of the thesis isnon-minimal Higgs sectors. We first consider models with multiple generations of Higgs bosons in both supersymmetric and non-supersymmetric scenarios and discuss the LHC implications.Then we consider models with exotic singlet scalars that mix with the SM Higgs boson. We discuss how such a mixed-in singlet can deform significance plots of the standard Higgs searches and thus lead to the discovery of the additional singlet.We also consider an approach where beyond standard model physics is parametrized by effective higher dimensional operators. In this study we focus on quartic couplings between the neutral gauge bosons, i.e. photons and Z bosons, that arise from these operators and explore the possibility of probing these couplings in diffractive photon fusion processes.

[发布机构] University of Michigan

[效力级别] Beyond Standard Model (BSM)

[关键词] Higgs Boson;Beyond Standard Model (BSM);Large Hadron Collider (LHC);Classicalization;Extended Higgs Sectors;Physics;Science;Physics