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

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:
 [1];  [2];  [3];  [4]
  1. Inst. for Basic Science (IBS), Daejeon (Korea, Republic of). Center for Theoretical Physics of the Universe
  2. 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.
  3. Univ. of Tokyo (Japan). Dept. of Physics
  4. Univ. of California, Riverside, CA (United States). Dept. of Physics and Astronomy
Publication Date:
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.
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.
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.
@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}
}

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