Search for a new Z′ gauge boson in 4μ events with the ATLAS experiment
This paper presents a search for a new Z′ vector gauge boson with the ATLAS experiment at the Large Hadron Collider using pp collision data collected at $$ \sqrt{s} $$= 13 TeV, corresponding to an integrated luminosity of 139 fb−1. The new gauge boson Z′ is predicted by Lμ − Lτ models to address obs...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
12 July 2023
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| In: |
Journal of high energy physics
Year: 2023, Heft: 7, Pages: 1-42 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP07(2023)090 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP07(2023)090
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| Verfasserangaben: | The ATLAS collaboration* |
MARC
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| 245 | 1 | 0 | |a Search for a new Z′ gauge boson in 4μ events with the ATLAS experiment |c The ATLAS collaboration* |
| 246 | 3 | 0 | |a four |
| 246 | 3 | 3 | |a Search for a new Z′ gauge boson in 4 mu events with the ATLAS experiment |
| 264 | 1 | |c 12 July 2023 | |
| 300 | |b Illustrationen | ||
| 300 | |a 42 | ||
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| 500 | |a Veröffentlicht: 12. Juli 2023 | ||
| 500 | |a *The ATLAS collaboration: G. Aad, L.M. Baltes, F. Bartels, F.L. Castillo, M.M. Czurylo, F. Del Rio, S.J. Dittmeier, M. Dunford, S. Franchino, M. Klassen, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, S. Rodriguez Bosca, C. Sauer, A. Schoening, H.-C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, S.M. Weber, M. Wessels, L. Vigani, J. Zinsser [und sehr viele weitere Personen] | ||
| 500 | |a Gesehen am 14.12.2023 | ||
| 520 | |a This paper presents a search for a new Z′ vector gauge boson with the ATLAS experiment at the Large Hadron Collider using pp collision data collected at $$ \sqrt{s} $$= 13 TeV, corresponding to an integrated luminosity of 139 fb−1. The new gauge boson Z′ is predicted by Lμ − Lτ models to address observed phenomena that can not be explained by the Standard Model. The search examines the four-muon (4μ) final state, using a deep learning neural network classifier to separate the Z′ signal from the Standard Model background events. The di-muon invariant masses in the 4μ events are used to extract the Z′ resonance signature. No significant excess of events is observed over the predicted background. Upper limits at a 95% confidence level on the Z′ production cross-section times the decay branching fraction of pp → Z′μμ → 4μ are set from 0.31 to 4.3 fb for the Z′ mass ranging from 5 to 81 GeV. The corresponding common coupling strengths, gZ′, of the Z′ boson to the second and third generation leptons above 0.003 - 0.2 have been excluded. | ||
| 650 | 4 | |a Beyond Standard Model | |
| 650 | 4 | |a Hadron-Hadron Scattering | |
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