Isospin violating dark matter in Stückelberg portal scenarios

作者: Víctor Martín Lozano , Miguel Peiró , Pablo Soler

DOI: 10.1007/JHEP04(2015)175

关键词: Dark matterStandard ModelPhysics beyond the Standard ModelHidden sectorIsospinParticle physicsBosonPhysicsQuarkString (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 .

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