TY - JOUR
T1 - SU(2)X vector DM and Galactic Center gamma-ray excess
AU - Chen, Chuan Hung
AU - Nomura, Takaaki
N1 - Funding Information:
This work is supported by the Ministry of Science and Technology, Taiwan under Grant # MOST-103-2112-M-006-004-MY3 (CHC) and MOST-103-2811-M-006-030 (TN). We also thank the National Center for Theoretical Sciences (NCTS) for supporting the useful facilities.
Publisher Copyright:
© 2015 The Authors.
PY - 2015/6/1
Y1 - 2015/6/1
N2 - An unbroken Z3 symmetry remains when a local SU(2)X symmetry is broken spontaneously by a quadruplet. The gauge boson χμ(χ-μ) carries the dark charge and is the candidate of dark matter (DM). Due to the mixture of the scalar boson ϕr of the quadruplet and the standard model (SM) Higgs boson, the DM can annihilate into SM particles through the Higgs portal. To investigate the implications of the vector DM in the model, we study the relic density of DM, the direct detection of the DM-nucleon scattering and the excess of the gamma-ray spectrum from the Galactic Center, which is supported by the data from the Fermi Gamma-Ray Space Telescope. We find that with the DM mass of around 70 GeV in our model, the data for the excess of the gamma-ray could be fitted well.
AB - An unbroken Z3 symmetry remains when a local SU(2)X symmetry is broken spontaneously by a quadruplet. The gauge boson χμ(χ-μ) carries the dark charge and is the candidate of dark matter (DM). Due to the mixture of the scalar boson ϕr of the quadruplet and the standard model (SM) Higgs boson, the DM can annihilate into SM particles through the Higgs portal. To investigate the implications of the vector DM in the model, we study the relic density of DM, the direct detection of the DM-nucleon scattering and the excess of the gamma-ray spectrum from the Galactic Center, which is supported by the data from the Fermi Gamma-Ray Space Telescope. We find that with the DM mass of around 70 GeV in our model, the data for the excess of the gamma-ray could be fitted well.
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U2 - 10.1016/j.physletb.2015.05.027
DO - 10.1016/j.physletb.2015.05.027
M3 - Article
AN - SCOPUS:84929581502
VL - 746
SP - 351
EP - 358
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
ER -