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@ARTICLE{Capdevilla:473285,
      author       = {Capdevilla, Rodolfo and Meloni, Federico and Simoniello,
                      Rosa and Zurita, Jose},
      title        = {{H}unting wino and higgsino dark matter at the muon
                      collider with disappearing tracks},
      journal      = {Journal of high energy physics},
      volume       = {06},
      number       = {6},
      issn         = {1029-8479},
      address      = {[Trieste]},
      publisher    = {SISSA},
      reportid     = {PUBDB-2021-05615, arXiv:2102.11292. DESY-21-019.
                      IFIC/21-03},
      pages        = {133},
      year         = {2021},
      note         = {32 pages, 17 figures, 3 tables},
      abstract     = {We study the capabilities of a muon collider experiment to
                      detect disappearing tracks originating when a heavy and
                      electrically charged long-lived particle decays via
                      X$^{+}$→ Y$^{+}$Z$^{0}$, where X$^{+}$ and Z$^{0}$ are two
                      almost mass degenerate new states and Y$^{+}$ is a charged
                      Standard Model particle. The backgrounds induced by the
                      in-flight decays of the muon beams (BIB) can create detector
                      hit combinations that mimic long-lived particle signatures,
                      making the search a daunting task. We design a simple
                      strategy to tame the BIB, based on a detector-hit-level
                      selection exploiting timing information and hit-to-hit
                      correlations, followed by simple requirements on the quality
                      of reconstructed tracks. Our strategy allows us to reduce
                      the number of tracks from BIB to an average of 0.08 per
                      event, hence being able to design a cut-and-count analysis
                      that shows that it is possible to cover weak doublets and
                      triplets with masses close to $ \sqrt{s}/2 $ in the 0.1–10
                      ns range. In particular, this implies that a 10 TeV muon
                      collider is able to probe thermal MSSM higgsinos and thermal
                      MSSM winos, thus rivaling the FCC-hh in that respect, and
                      further enlarging the physics program of the muon collider
                      into the territory of WIMP dark matter and long-lived
                      signatures. We also provide parton-to-reconstructed level
                      efficiency maps, allowing an estimation of the coverage of
                      disappearing tracks at muon colliders for arbitrary models.},
      keywords     = {new physics (INSPIRE) / supersymmetry: dark matter
                      (INSPIRE) / minimal supersymmetric standard model (INSPIRE)
                      / muon: storage ring (INSPIRE) / muon+ muon- (INSPIRE) /
                      linear collider (INSPIRE) / chargino: production (INSPIRE) /
                      chargino: NLSP (INSPIRE) / NLSP: long-lived (INSPIRE) /
                      WIMP: dark matter (INSPIRE) / LSP: dark matter (INSPIRE) /
                      neutralino: LSP (INSPIRE) / neutralino: dark matter
                      (INSPIRE) / Wino: dark matter (INSPIRE) / Higgsino: dark
                      matter (INSPIRE) / Beyond Standard Model (autogen) /
                      Supersymmetric Standard Model (autogen)},
      cin          = {ATLAS},
      ddc          = {530},
      cid          = {I:(DE-H253)ATLAS-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF4-611)},
      pid          = {G:(DE-HGF)POF4-611},
      experiment   = {EXP:(DE-H253)MUON-20220801},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {2102.11292},
      howpublished = {arXiv:2102.11292},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2102.11292;\%\%$},
      UT           = {WOS:000665787500001},
      doi          = {10.1007/JHEP06(2021)133},
      url          = {https://bib-pubdb1.desy.de/record/473285},
}