Di-photon excess illuminates Dark Matter
| Autor: | Alberto Mariotti, Diego Redigolo, Mihailo Backović |
|---|---|
| Přispěvatelé: | UCL - SST/IRMP - Institut de recherche en mathématique et physique |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics Large Hadron Collider Missing energy Photon 010308 nuclear & particles physics Dark matter Scalar (physics) FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics 750 GeV diphoton excess Cosmology of Theories beyond the SM 01 natural sciences Physique atomique et nucléaire High Energy Physics - Experiment High Energy Physics - Experiment (hep-ex) High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Bounded function Beyond Standard Model 0103 physical sciences 010306 general physics |
| Zdroj: | Journal of High Energy Physics, Vol. 1603, p. 157 (2016) The Journal of high energy physics, 2016 (3 Journal of High Energy Physics |
| Popis: | We propose a simplified model of dark matter with a scalar mediator to accommodate the di-photon excess recently observed by the ATLAS and CMS collaborations. Decays of the resonance into dark matter can easily account for a relatively large width of the scalar resonance, while the magnitude of the total width combined with the constraint on dark matter relic density leads to sharp predictions on the parameters of the Dark Sector. Under the assumption of a rather large width, the model predicts a signal consistent with ∼ 300 GeV dark matter particle and ∼ 750 GeV scalar mediator in channels with large missing energy. This prediction is not yet severely bounded by LHC Run I searches and will be accessible at the LHC Run II in the jet plus missing energy channel with more luminosity. Our analysis also considers astro-physical constraints, pointing out that future direct detection experiments will be sensitive to this scenario. SCOPUS: ar.j info:eu-repo/semantics/published |
| Databáze: | OpenAIRE |
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