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The leptophilic dark matter with $Z'$ interaction: from indirect searches to future $e^+ e^-$ collider searches | | Ning Chen
; Jian Wang
; Xiao-Ping Wang
; | | Date: |
19 Jan 2015 | | Abstract: | We investigate the scenario where the dark matter only interacts with the
charged leptons in the standard model via a neutral vector mediator $Z’$. Such
a scenario with a 430 GeV dark matter can fit the recent positron fluxes
observed by the AMS-02 Collaborations, with the reasonable boost factors. We
study the possibility of searching such leptophilic $Z’$ via its lepton final
states and invisible decay modes at the future electron-positron colliders,
such as the International Linear Collider (ILC) and the Compact Linear Collider
(CLIC). We find that for the benchmark models with $Z’$ mass from $1.0,TeV$
to $1.5,TeV$, the searches for the invisible decays of $Z’ o ar chi chi$
is easily achieved at the CLIC $1.5,TeV$ runs via the mono-photon process.
However, lighter $Z’$ with mass from $0.5,TeV$ to $0.8,TeV$ are challenging
to see. The di-lepton plus single photon channel can reveal the $Z’$ mass at
the ILC and CLIC with moderate luminosities. | | Source: | arXiv, 1501.4486 | | Services: | Forum | Review | PDF | Favorites | |
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