Self-interacting dark matter and muon (g - 2) in a gauged U ( 1 ) L μ − L τ model

doi:10.1007/jhep06(2018)117

Title: Self-interacting dark matter and muon (g - 2) in a gauged $U {(1)}_{L_{μ} - L_{τ}}$ model

Full Record
Other Related Research

Abstract

We construct a self-interacting dark matter model that could simultaneously explain the observed muon anomalous magnetic moment. It is based on a gauged $U {(1)}_{L_{μ} - L_{τ}}$ extension of the standard model, where we introduce a vector-like pair of fermions as the dark matter candidate and a new Higgs boson to break the symmetry. The new gauge boson has a sizable contribution to muon (g - 2), while being consistent with other experimental constraints. The $U {(1)}_{L_{μ} - L_{τ}}$ Higgs boson acts as a light force carrier, mediating dark matter self-interactions with a velocity-dependent cross section. It is large enough in galaxies to thermalize the inner halo and explain the diverse rotation curves and diminishes towards galaxy clusters. Since the light mediator dominantly decays to the $U {(1)}_{L_{μ} - L_{τ}}$ gauge boson and neutrinos, the astrophysical and cosmological constraints are weak. We study the thermal evolution of the model in the early Universe and derive a lower bound on the gauge boson mass.

Authors:

Kamada, Ayuki ^[1]; Kaneta, Kunio ^[2]; Yanagi, Keisuke ^[3]; Yu, Hai-Bo ^[4]

Inst. for Basic Science (IBS), Daejeon (Korea, Republic of). Center for Theoretical Physics of the Universe
Inst. for Basic Science (IBS), Daejeon (Korea, Republic of). Center for Theoretical Physics of the Universe; Univ. of Minnesota, Minneapolis, MN (United States). School of Physics and Astronomy. William I. Fine Theoretical Physics Inst.
Univ. of Tokyo (Japan). Dept. of Physics
Univ. of California, Riverside, CA (United States). Dept. of Physics and Astronomy

Publication Date:: 2018-06-21

Research Org.:: Univ. of California, Riverside, CA (United States); Univ. of Minnesota, Minneapolis, MN (United States); Inst. for Basic Science (IBS), Daejeon (Korea, Republic of); Univ. of Tokyo (Japan)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Science Foundation (NSF); Inst. for Basic Science (IBS) (Korea, Republic of); Japan Society for the Promotion of Science (JSPS)

OSTI Identifier:: 1505139

Grant/Contract Number:: SC0008541; SC0011842; PHY-1748958; IBS-R018-D; JP18J10202

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: 2018; Journal Issue: 6; 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

Citation Formats


                    Kamada, Ayuki, Kaneta, Kunio, Yanagi, Keisuke, and Yu, Hai-Bo. Self-interacting dark matter and muon (g - 2) in a gauged U ( 1 ) L μ − L τ model.  United States: N. p., 2018. 
        Web.  doi:10.1007/jhep06(2018)117.

Copy to clipboard


                    Kamada, Ayuki, Kaneta, Kunio, Yanagi, Keisuke, & Yu, Hai-Bo. Self-interacting dark matter and muon (g - 2) in a gauged U ( 1 ) L μ − L τ model.  United States.  doi:10.1007/jhep06(2018)117.

Copy to clipboard


                    Kamada, Ayuki, Kaneta, Kunio, Yanagi, Keisuke, and Yu, Hai-Bo. Thu .  
        "Self-interacting dark matter and muon (g - 2) in a gauged U ( 1 ) L μ − L τ model".  United States.  doi:10.1007/jhep06(2018)117.  https://www.osti.gov/servlets/purl/1505139.

Copy to clipboard


                    
@article{osti_1505139,

  title        = {Self-interacting dark matter and muon (g - 2) in a gauged U ( 1 ) L μ − L τ model},

  author       = {Kamada, Ayuki and Kaneta, Kunio and Yanagi, Keisuke and Yu, Hai-Bo},

  abstractNote = {We construct a self-interacting dark matter model that could simultaneously explain the observed muon anomalous magnetic moment. It is based on a gauged U ( 1 ) L μ − L τ extension of the standard model, where we introduce a vector-like pair of fermions as the dark matter candidate and a new Higgs boson to break the symmetry. The new gauge boson has a sizable contribution to muon (g - 2), while being consistent with other experimental constraints. The U ( 1 ) L μ − L τ Higgs boson acts as a light force carrier, mediating dark matter self-interactions with a velocity-dependent cross section. It is large enough in galaxies to thermalize the inner halo and explain the diverse rotation curves and diminishes towards galaxy clusters. Since the light mediator dominantly decays to the U ( 1 ) L μ − L τ gauge boson and neutrinos, the astrophysical and cosmological constraints are weak. We study the thermal evolution of the model in the early Universe and derive a lower bound on the gauge boson mass.},

  doi          = {10.1007/jhep06(2018)117},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 6,

  volume       = 2018,

  place        = {United States},

  year         = {2018},

  month        = {6}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

DOI: 10.1007/jhep06(2018)117

Other availability

Title: Self-interacting dark matter and muon (g - 2) in a gauged U ( 1 ) L μ − L τ model

Abstract

Citation Formats

Title: Self-interacting dark matter and muon (g - 2) in a gauged $U {(1)}_{L_{μ} - L_{τ}}$ model