Lifetime of the dark Z bosonLifetime of the dark Z boson
- Other Titles
- Lifetime of the dark Z boson
- Authors
- Jung, Dong-Won; Lee, Kang Young; Yu, Chaehyun
- Issue Date
- Dec-2023
- Publisher
- 한국물리학회
- Keywords
- hidden sector; dark Z boson; LHC; SHiP
- Citation
- Journal of the Korean Physical Society, v.83, no.12, pp 932 - 940
- Pages
- 9
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- Journal of the Korean Physical Society
- Volume
- 83
- Number
- 12
- Start Page
- 932
- End Page
- 940
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/68975
- DOI
- 10.1007/s40042-023-00976-7
- ISSN
- 0374-4884
1976-8524
- Abstract
- The mediator particle between the Standard Model sector and a hidden sector might have a long lifetime to show the observable displaced vertices in experiments. Considering a fermionic dark matter model in which the hidden sector is connected to the Standard Model by an additional Higgs doublet field, the mediator dark Z boson may live long enough. We explore the possibility to observe the displaced vertices of the long-lived dark Z boson at the CERN LHC and at the proposed SHiP experiment. We find that the ATLAS and CMS searches for the long-lived dark Z boson can probe the mass range 7<mZ′<150MeV with 150 fb - 1 integrated luminosity at the LHC run 3, and the SHiP experiment will probe 2me<mZ′<15MeV range with 6 × 10 20 protons on target in total 15 years. The dark matter phenomenology is also discussed in the region where such a long-lived mediator is detectable. © 2023, The Korean Physical Society.
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