# Dark matter and LHC phenomenology of a scale-invariant scotogenic model

• We study the phenomenology of a model that addresses the neutrino mass, dark matter, and generation of the electroweak scale in a single framework. Electroweak symmetry breaking is realized via the Coleman-Weinberg mechanism in a classically scale invariant theory, while the neutrino mass is generated radiatively through interactions with dark matter in a typically scotogenic manner. The model introduces a scalar triplet and singlet and a vector-like fermion doublet that carry an odd parity of $Z_2$, and an even parity scalar singlet that helps preserve classical scale invariance. We sample over the parameter space by taking into account various experimental constraints from the dark matter relic density and direct detection, direct scalar searches, neutrino mass, and charged lepton flavor violating decays. We then examine by detailed simulations possible signatures at the LHC to find some benchmark points of the free parameters. We find that the future high-luminosity LHC will have a significant potential in detecting new physics signals in the dilepton channel.

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Chao Guo, Shu-Yuan Guo and Yi Liao. Dark matter and LHC phenomenology of a scale-invariant scotogenic model[J]. Chinese Physics C, 2019, 43(10): 103102. doi: 10.1088/1674-1137/43/10/103102
Chao Guo, Shu-Yuan Guo and Yi Liao. Dark matter and LHC phenomenology of a scale-invariant scotogenic model[J]. Chinese Physics C, 2019, 43(10): 103102.
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Revised: 2019-06-30
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沈阳化工大学材料科学与工程学院 沈阳 110142

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## Dark matter and LHC phenomenology of a scale-invariant scotogenic model

###### Corresponding author: Yi Liao, liaoy@nankai.edu.cn
• 1. School of Physics, Nankai University, Tianjin 300071, China
• 2. Center for High Energy Physics, Peking University, Beijing 100871, China

Abstract: We study the phenomenology of a model that addresses the neutrino mass, dark matter, and generation of the electroweak scale in a single framework. Electroweak symmetry breaking is realized via the Coleman-Weinberg mechanism in a classically scale invariant theory, while the neutrino mass is generated radiatively through interactions with dark matter in a typically scotogenic manner. The model introduces a scalar triplet and singlet and a vector-like fermion doublet that carry an odd parity of $Z_2$, and an even parity scalar singlet that helps preserve classical scale invariance. We sample over the parameter space by taking into account various experimental constraints from the dark matter relic density and direct detection, direct scalar searches, neutrino mass, and charged lepton flavor violating decays. We then examine by detailed simulations possible signatures at the LHC to find some benchmark points of the free parameters. We find that the future high-luminosity LHC will have a significant potential in detecting new physics signals in the dilepton channel.

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