Combination of the searches for pair-produced vectorlike partners of the third-generation quarks at √s=13 TeV with the ATLAS detector
A combination of the searches for pair-produced vectorlike partners of the top and bottom quarks in various decay channels (T→Zt/Wb/Ht, B→Zb/Wt/Hb) is performed using 36.1 fb−1 of pp collision data at √s=13 TeV with the ATLAS detector at the Large Hadron Collider. The observed data are found to be i...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
20 November 2018
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| In: |
Physical review letters
Year: 2018, Jahrgang: 121, Heft: 21 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.121.211801 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1103/PhysRevLett.121.211801 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.121.211801 |
| Verfasserangaben: | M. Aaboud et al.* (ATLAS Collaboration) |
| Zusammenfassung: | A combination of the searches for pair-produced vectorlike partners of the top and bottom quarks in various decay channels (T→Zt/Wb/Ht, B→Zb/Wt/Hb) is performed using 36.1 fb−1 of pp collision data at √s=13 TeV with the ATLAS detector at the Large Hadron Collider. The observed data are found to be in good agreement with the standard model background prediction in all individual searches. Therefore, combined 95% confidence-level upper limits are set on the production cross section for a range of vectorlike quark scenarios, significantly improving upon the reach of the individual searches. Model-independent limits are set assuming the vectorlike quarks decay to standard model particles. A singlet T is excluded for masses below 1.31 TeV and a singlet B is excluded for masses below 1.22 TeV. Assuming a weak isospin (T,B) doublet and |VTb|≪|VtB|, T and B masses below 1.37 TeV are excluded. |
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| Beschreibung: | M. Aaboud, A.E. Baas, A.E. Bolz, O. Brandt, J.I. Djuvsland, M. Dunford, D.E. Ferreira de Lima, S. Franchino, M.P. Geisler, M. Giulini, P. Hanke, J. Jongmanns, M. Kolb, A. Kugel, M. Lisovyi, H. Meyer Zu Theenhausen, F. Napolitano, D.I. Narrias Villar, M. Sahinsoy, A. Schoening, H-C. Schultz-Coulon, T.M. Spieker, R. Stamen, P. Starovoitov, S. Suchek, S.M. Weber, M. Wessels, X. Yue [und weitere] (ATLAS Collaboration) Gesehen am 03.04.2019 |
| Beschreibung: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.121.211801 |