2015/01/19 by Ning Chen, Jian Wang, Chen, Ning +3 · 2 citations
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #astro-ph.HE #hep-ex #hep-ph
paper · pdf · doi:10.48550/arxiv.1501.04486
V2: revtex4 format, 26 pages, 4 figures, results improved, Ref's added
openalex publication_date 2015/01/19 · arxiv created 2015/02/04 · arxiv updated 2015/02/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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'→ χχ 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.