Cold Dark Matters in U(1)' Models

• Published in: arXiv.org
• Main Author: Omura, Yuji
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 28.01.2012
• Subjects: Cold dark matter; Dark matter; Fermions; Physics - High Energy Physics - Phenomenology; Supersymmetry; Symmetry
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1201.5934

We consider models with extra U(1)' gauge symmetry that is broken spontaneously. In the models, there are cold dark matter candidates which are charged under U(1)' symmetry. Depending on the charge assignment, we can evade the strong bound from the Drell-Yang process, and consider the scenario that the dark matters strongly interact with the fermions in the Standard Model through the extra gauge boson exchanging. As an illustrative example, we discuss a supersymmetric gauged U(1)_B \times U(1)_L model and see that not only correct relic density but also the DAMA/CoGeNT excess can be achieved by the dark matters.