Title: Dirac-fermionic dark matter in U(1) _X models

Abstract

Here, we study a number of U(1) _X models featuring a Dirac fermion dark matter particle. We perform a comprehensive analysis which includes the study of corrections to the muon magnetic moment, dilepton searches with LHC data, as well as direct and indirect dark matter detection constraints. We consider four different coupling structures, namely U(1) _B–L, U(1) _d–u, U(1)universal, and U(1) _10+5¯ , all motivated by compelling extensions to the standard model. We outline the viable and excluded regions of parameter space using a large set of probes. Our key findings are that the combination of direct detection and collider constraints rule out dark matter particle masses lighter than ~ 1 TeV, unless rather suppressed Z'-fermion couplings exist, and that for several of the models under consideration, collider constraints rule out Z' masses up to ~3 TeV. Lastly, we show that we can accommodate the recent Diboson excess reported by ATLAS collaboration within the U(1) _d–u model.

Authors:

Alves, Alexandre ^[1]; Berlin, Asher ^[2]; Profumo, Stefano ^[3]; Queiroz, Farinaldo S. ^[4]

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+ Show Author Affiliations

1. Univ. Federal de Sao Paulo, Sao Paulo (Brazil)
2. Univ. of Chicago, Chicago, IL (United States)
3. Univ. of California, Santa Cruz, CA (United States)
4. Univ. of California, Santa Cruz, CA (United States); Texas A & M Univ., College Station, TX (United States); Max-Planck-Institut fur Kernphysik, Heidelberg (Germany)

Publication Date:

2015-10-12

Research Org.:

Univ.of California, Santa Cruz, CA (United States). Dept. of Physics and Santa Cruz Institute for Particle Physics

Sponsoring Org.:

USDOE

OSTI Identifier:

1466005

Grant/Contract Number:  

SC0010107

Resource Type:

Accepted Manuscript

Journal Name:

Journal of High Energy Physics (Online)

Additional Journal Information:

Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 10; Journal ID: ISSN 1029-8479

Publisher:

Springer Berlin

Country of Publication:

United States

Language:

English

Subject:

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS; Beyond Standard Model; Cosmology of Theories beyond the SM