Dark matter and spin-1 milli-charged particles

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Abstract

Abstract: New physics scenarios beyond the Standard Model predict the existence of milli-charged particles. So far, only spin-1/2 and spin-0 milli-charged particles have been considered in literature, leaving out the interesting case of spin-1. We propose a minimal unitary and renormalizable model of massive milli-charged vector particles. Unitarity requires that these particles are gauge bosons of a non-abelian spontaneously broken gauge symmetry. The minimal scenario then consists of an extended Standard Model gauge group SU(2)L × U(1)Y × SU(2)D together with a SU(2)D dark Higgs boson responsible for the symmetry breaking in the dark sector. By imposing that the dark Higgs multiplet has a non-vanishing milli-hypercharge, stable milli-charged spin-1 fields arise thereby providing a potential dark matter candidate. We analyse the phenomenological constraints on this scenario and discuss their implications.

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APA

Gabrielli, E., Marzola, L., Raidal, M., & Veermäe, H. (2015). Dark matter and spin-1 milli-charged particles. Journal of High Energy Physics, 2015(8). https://doi.org/10.1007/JHEP08(2015)150

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