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Title: Exposing the dark sector with future Z factories

Here, 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 axionlike 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 in uncovering the hidden sector of the Universe in the future.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. The Univ. of Chicago, Chicago, IL (United States); Johannes Gutenberg Univ., Mainz (Germany)
  2. The Univ. of Chicago, Chicago, IL (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); Johannes Gutenberg Univ., Mainz (Germany)
  4. European Organization for Nuclear Research (CERN), Geneva (Switzerland); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357; SC-0013642; SC-00012567; SC-00015476; 669668-NEO-NAT-ERC-AdG-2014
Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 97; Journal Issue: 9; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
German Research Foundation (DFG); European Union, Horizon 2020 Research and Innovation Programme; USDOE
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1439736
Alternate Identifier(s):
OSTI ID: 1483677

Liu, Jia, Wang, Lian -Tao, Wang, Xiao -Ping, and Xue, Wei. Exposing the dark sector with future Z factories. United States: N. p., Web. doi:10.1103/PhysRevD.97.095044.
Liu, Jia, Wang, Lian -Tao, Wang, Xiao -Ping, & Xue, Wei. Exposing the dark sector with future Z factories. United States. doi:10.1103/PhysRevD.97.095044.
Liu, Jia, Wang, Lian -Tao, Wang, Xiao -Ping, and Xue, Wei. 2018. "Exposing the dark sector with future Z factories". United States. doi:10.1103/PhysRevD.97.095044.
@article{osti_1439736,
title = {Exposing the dark sector with future Z factories},
author = {Liu, Jia and Wang, Lian -Tao and Wang, Xiao -Ping and Xue, Wei},
abstractNote = {Here, 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 axionlike 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 in uncovering the hidden sector of the Universe in the future.},
doi = {10.1103/PhysRevD.97.095044},
journal = {Physical Review D},
number = 9,
volume = 97,
place = {United States},
year = {2018},
month = {5}
}