Search for nearly mass-degenerate higgsinos using low-momentum mildly displaced tracks in pp collisions at √s = 13 TeV with the ATLAS detector
Higgsinos with masses near the electroweak scale can solve the hierarchy problem and provide a dark matter candidate, while detecting them at the LHC remains challenging if their mass splitting is 𝒪(1 GeV). This Letter presents a novel search for nearly mass-degenerate Higgsinos in events with an e...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
30 May, 2024
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| In: |
Physical review letters
Year: 2024, Jahrgang: 132, Heft: 22, Pages: 1-24 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.132.221801 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.132.221801 Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.132.221801 
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| Verfasserangaben: | G. Aad et al. (ATLAS Collaboration) |
MARC
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| 245 | 1 | 0 | |a Search for nearly mass-degenerate higgsinos using low-momentum mildly displaced tracks in pp collisions at √s = 13 TeV with the ATLAS detector |c G. Aad et al. (ATLAS Collaboration) |
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| 246 | 3 | 3 | |a Search for nearly mass-degenerate higgsinos using low-momentum mildly displaced tracks in pp collisions at square root s = 13 TeV with the ATLAS detector |
| 264 | 1 | |c 30 May, 2024 | |
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| 500 | |a Gesehen am 10.10.2025 | ||
| 500 | |a ATLAS collaboration: G. Aad, A. Ackermann, L.M. Baltes, F. Bartels, F. Del Rio, S.J. Dittmeier, M. Dunford, S. Franchino, T. Junkermann, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, C. Sauer, A. Schoening, H-C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels, J. Zinsser [und viele weitere] | ||
| 520 | |a Higgsinos with masses near the electroweak scale can solve the hierarchy problem and provide a dark matter candidate, while detecting them at the LHC remains challenging if their mass splitting is (1 GeV). This Letter presents a novel search for nearly mass-degenerate Higgsinos in events with an energetic jet, missing transverse momentum, and a low-momentum track with a significant transverse impact parameter using 140 fb−1 of proton-proton collision data at √=13 TeV collected by the ATLAS experiment. For the first time since LEP, a range of mass splittings between the lightest charged and neutral Higgsinos from 0.3 to 0.9 GeV is excluded at 95% confidence level, with a maximum reach of approximately 170 GeV in the Higgsino mass. | ||
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