Artículos de revistas
On dilatons and the LHC diphoton excess
Fecha
2016-05-24Registro en:
Journal Of High Energy Physics. New York: Springer, n. 5, 34 p., 2016.
1029-8479
10.1007/JHEP05(2016)137
WOS:000377451100001
WOS000377451100001.pdf
Autor
Werner Heisenberg Inst
BIST
ICREA
Universidade Estadual Paulista (Unesp)
Institución
Resumen
We study soft wall models that can embed the Standard Model and a naturally light dilaton. Exploiting the full capabilities of these models we identify the parameter space that allows to pass Electroweak Precision Tests with a moderate Kaluza-Klein scale, around 2 TeV. We analyze the coupling of the dilaton with Standard Model (SM) fields in the bulk, and discuss two applications: i) Models with a light dilaton as the first particle beyond the SM pass quite easily all observational tests even with a dilaton lighter than the Higgs. However the possibility of a 125 GeV dilaton as a Higgs impostor is essentially disfavored; ii) We show how to extend the soft wall models to realize a 750 GeV dilaton that could explain the recently reported diphoton excess at the LHC.