Combination of the searches for pair-produced vector-like partners of the third-generation quarks at √s = 13 TeV with the ATLAS detector

Rimoldi, Marco; Mullier, Geoffrey; Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Meloni, Federico; Beck, Hans Peter; Ereditato, Antonio (2018). Combination of the searches for pair-produced vector-like partners of the third-generation quarks at √s = 13 TeV with the ATLAS detector. Physical review letters, 121(21) American Physical Society 10.1103/PhysRevLett.121.211801

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A combination of the searches for pair-produced vectorlike partners of the top and bottom quarks invarious decay channels (T→Zt/Wb/Ht, B → Zb/Wt/Hb) is performed using 36.1fb⁻¹ of pp collision data a √s = 13TeV 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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Haug, Sigve; Weber, Michael and Beck, Hans Peter

Subjects:

500 Science > 530 Physics

ISSN:

0031-9007

Publisher:

American Physical Society

Language:

English

Submitter:

BORIS Import LHEP

Date Deposited:

18 Jun 2019 08:04

Last Modified:

22 Oct 2019 21:26

Publisher DOI:

10.1103/PhysRevLett.121.211801

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt

BORIS DOI:

10.7892/boris.129018

URI:

https://boris.unibe.ch/id/eprint/129018

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