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Exposing dark sector with future $Z$-factories

We investigate the prospects of searching dark sector models via exotic $Z$-boson decay at future $e^+e^−$ colliders with Giga $Z$ and Tera $Z$ options. Four general categories of dark sector models: Higgs portal dark matter, vector portal dark matter, inelastic dark matter and axion-like particles,...

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Detalles Bibliográficos
Autores principales: Liu, Jia, Wang, Lian-Tao, Wang, Xiao-Ping, Xue, Wei
Lenguaje:eng
Publicado: 2019
Materias:
Acceso en línea:https://dx.doi.org/10.1142/S0217751X19400104
http://cds.cern.ch/record/2800926
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author Liu, Jia
Wang, Lian-Tao
Wang, Xiao-Ping
Xue, Wei
author_facet Liu, Jia
Wang, Lian-Tao
Wang, Xiao-Ping
Xue, Wei
author_sort Liu, Jia
collection CERN
description We investigate the prospects of searching dark sector models via exotic $Z$-boson decay at future $e^+e^−$ colliders with Giga $Z$ and Tera $Z$ options. Four general categories of dark sector models: Higgs portal dark matter, vector portal dark matter, inelastic dark matter and axion-like particles, are considered. Focusing on channels motivated by the dark sector models, we carry out a model independent study of the sensitivities of $Z$-factories in probing exotic decays. The limits on branching ratios of the exotic Z decay are typically 𝒪($10^{−6} − 10^{−8.5}$) for the Giga $Z$ and 𝒪($10^{−7.5} − 10^{−11}$) for the Tera $Z$, and they are compared with the projection for the high luminosity LHC. We demonstrate that future $Z$-factories can provide its unique and leading sensitivity, and highlight the complementarity with other experiments, including the indirect and direct dark matter search limits, and the existing collider limits. Future $Z$ factories will play a leading role to uncover the hidden sector of the universe in the future.
id cern-2800926
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2019
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spelling cern-28009262022-02-07T12:39:47Zdoi:10.1142/S0217751X19400104http://cds.cern.ch/record/2800926engLiu, JiaWang, Lian-TaoWang, Xiao-PingXue, WeiExposing dark sector with future $Z$-factoriesParticle Physics - PhenomenologyWe investigate the prospects of searching dark sector models via exotic $Z$-boson decay at future $e^+e^−$ colliders with Giga $Z$ and Tera $Z$ options. Four general categories of dark sector models: Higgs portal dark matter, vector portal dark matter, inelastic dark matter and axion-like particles, are considered. Focusing on channels motivated by the dark sector models, we carry out a model independent study of the sensitivities of $Z$-factories in probing exotic decays. The limits on branching ratios of the exotic Z decay are typically 𝒪($10^{−6} − 10^{−8.5}$) for the Giga $Z$ and 𝒪($10^{−7.5} − 10^{−11}$) for the Tera $Z$, and they are compared with the projection for the high luminosity LHC. We demonstrate that future $Z$-factories can provide its unique and leading sensitivity, and highlight the complementarity with other experiments, including the indirect and direct dark matter search limits, and the existing collider limits. Future $Z$ factories will play a leading role to uncover the hidden sector of the universe in the future.oai:cds.cern.ch:28009262019
spellingShingle Particle Physics - Phenomenology
Liu, Jia
Wang, Lian-Tao
Wang, Xiao-Ping
Xue, Wei
Exposing dark sector with future $Z$-factories
title Exposing dark sector with future $Z$-factories
title_full Exposing dark sector with future $Z$-factories
title_fullStr Exposing dark sector with future $Z$-factories
title_full_unstemmed Exposing dark sector with future $Z$-factories
title_short Exposing dark sector with future $Z$-factories
title_sort exposing dark sector with future $z$-factories
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1142/S0217751X19400104
http://cds.cern.ch/record/2800926
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