Dark SU(2) Stueckelberg portal

Abstract

We study the non-abelian $SU(2{)}_D$ extension of the $U(1{)}_D$ Stueckelberg portal, which plays a role of the mediator between the Standard Model (SM) and Dark Sector (DS). This portal is specified by the Stueckelberg mechanism for generation of dark gauge boson masses. Proposed $U(1{)}_D\times SU(2{)}_D$ Stueckelberg portal has a connection with SM matter fields in analogy with Familon Model. We derive bounds on the couplings of dark portal bosons and SM particles, which govern diagonal and non-diagonal flavor transitions of quarks and leptons.

arXiv comment12 pages, 4 figures, journal version

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