作者: Víctor Martín Lozano , Miguel Peiró , Pablo Soler
关键词: Dark matter 、 Standard Model 、 Physics beyond the Standard Model 、 Hidden sector 、 Isospin 、 Particle physics 、 Boson 、 Physics 、 Quark 、 String (physics)
摘要: Hidden sector scenarios in which dark matter (DM) interacts with the Standard Model fields through exchange of massive Z′ bosons are well motivated by certain string theory constructions. In this work, we thoroughly study phenomenological aspects such and find that they present a clear testable consequence for direct DM searches. We show Stuckelberg portals naturally lead to isospin violating interactions particles nuclei. relations between coupling neutrons protons both, spin-independent (f n /f p ) spin-dependent (a /a interactions, very flexible depending on charges quarks under extra U(1) gauge groups. within construction these ratios generically different from ±1 (i.e. couplings neutrons) leading potentially measurable distinction other popular portals. Finally, incorporate bounds searches dijet dilepton resonances at LHC as LUX elastic scattering off nucleons determine experimentally allowed values f a .