Hunting wino and higgsino dark matter at the muon collider with disappearing tracks
| Autor: | Rodolfo Capdevilla, Rosa Simoniello, Federico Meloni, Jose Zurita |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics::Instrumentation and Detectors
LSP [neutralino] QC770-798 muon: storage ring 01 natural sciences WIMP: dark matter chargino: NLSP dark matter [WIMP] High Energy Physics - Phenomenology (hep-ph) chargino: production WIMP dark matter [LSP] Higgsino: dark matter Physics neutralino: LSP Wino: dark matter Range (particle radiation) new physics long-lived [NLSP] dark matter [Wino] minimal supersymmetric standard model hep-ph production [chargino] High Energy Physics - Phenomenology Muon collider storage ring [muon] dark matter [Higgsino] neutralino: dark matter dark matter [neutralino] Nuclear and High Energy Physics Particle physics dark matter [supersymmetry] Supersymmetric Standard Model Dark matter FOS: Physical sciences Standard Model muon+ muon Nuclear and particle physics. Atomic energy. Radioactivity LSP: dark matter 0103 physical sciences ddc:530 Higgsino 010306 general physics Particle Physics - Phenomenology NLSP [chargino] Muon 010308 nuclear & particles physics NLSP: long-lived supersymmetry: dark matter Beyond Standard Model High Energy Physics::Experiment linear collider Event (particle physics) |
| Zdroj: | Journal of High Energy Physics Journal of High Energy Physics, Vol 2021, Iss 6, Pp 1-32 (2021) Journal of high energy physics 06(6), 133 (2021). doi:10.1007/JHEP06(2021)133 |
| DOI: | 10.3204/pubdb-2021-05615 |
| Popis: | Journal of high energy physics 06(6), 133 (2021). doi:10.1007/JHEP06(2021)133 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. Published by SISSA, [Trieste] |
| Databáze: | OpenAIRE |
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