LHC Phenomenology of an Extended Standard Model with a Real Scalar Singlet

Simple item page
dc.creatorBarger, Vernon
dc.creatorLangacker, Paul
dc.creatorMcCaskey, Mathew
dc.creatorRamsey-Musolf, Michael J.
dc.creatorShaughnessy, Gabe
dc.date2007-06-28
dc.date.accessioned2026-07-07T11:17:19Z
dc.date.available2026-07-07T11:17:19Z
dc.descriptionGauge singlet extensions of the Standard Model (SM) scalar sector may help remedy its theoretical and phenomenological shortcomings while solving outstanding problems in cosmology. Depending on the symmetries of the scalar potential, such extensions may provide a viable candidate for the observed relic density of cold dark matter or a strong first order electroweak phase transition needed for electroweak baryogenesis. Using the simplest extension of the SM scalar sector with one real singlet field, we analyze the generic implications of a singlet-extended scalar sector for Higgs boson phenomenology at the Large Hadron Collider (LHC). We consider two broad scenarios: one in which the neutral SM Higgs and singlet mix and the other in which no mixing occurs and the singlet can be a dark matter particle. For the first scenario, we analyze constraints from electroweak precision observables and their implications for LHC Higgs phenomenology. For models in which the singlet is stable, we determine the conditions under which it can yield the observed relic density, compute the cross sections for direct detection in recoil experiments, and discuss the corresponding signatures at the LHC.
dc.description39 pages, 11 figures, 2 tables
dc.identifierhttps://arxiv.org/abs/0706.4311
dc.identifierhttp://arxiv.org/abs/0706.4311
dc.identifierPhys.Rev.D77:035005,2008
dc.identifierdoi:10.1103/PhysRevD.77.035005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192969
dc.subjectHigh Energy Physics - Phenomenology
dc.titleLHC Phenomenology of an Extended Standard Model with a Real Scalar Singlet
dc.typetext

Files

Collections

arXiv