CERN LHC phenomenology of an extended standard model with a real scalar singlet
By V. Barger, P. Langacker, M. McCaskey, M. Ramsey-Musolf, G. Shaughnessy. 2007
476 citations recorded by the source corpus.
Gauge 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.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/8ecfa5066155066ef737bfb94a6e5263eaa77a15
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Astronomy and Astrophysics
- Andrea Tesi
- A. Wulzer
- G. Panico
- M. Raidal
- Igor P. Ivanov
- John Ellis
- Atlas Collaboration
- Abdelhak Djouadi
In Nuclear and High Energy Physics
- Cms Collaboration
- Atlas Collaboration
- Gudrun Heinrich
- Fabio Maltoni
- Stefan Dittmaier
- Ansgar Denner
- M. Grazzini
- Valentin Hirschi
Citations in the corpus
- Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies (2016, methodology): “Through mixing with the Higgs, φ picks up coupling to the Standard Model, and thus serves as the bridge between the two sectors (as does the SM Higgs) [354, 361, 362].”
- Vacuum stability, perturbativity, and scalar singlet dark matter (2009, background): “Its existence could be verified experimentally through the discovery of one or more mixed SU(2)L doublet-singlet states in colliders [9, 10], the observation of a distinctive azimuthal correlation between outgoing jets in weak boson fusion [14–16], and a signal in the next generation of dark matter ”
- Higgs Physics at the HL-LHC and HE-LHC (2019, background): “Perhaps, the simplest illustration of this potential is the extension of the SM scalar sector with a single real singlet scalar [395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405, 333, 406], the “xSM” [407] (for analogous studies with a complex singlet, see [408, 409]).”