info:eu-repo/semantics/article
Combination of the searches for pair-produced vector-like partners of the third-generation quarks at s√= 13 TeV with the ATLAS detector
Fecha
2018-08Registro en:
Aaboud, M.; Aad, G.; Abbott, B.; Abdinov, O.; Abeloos, B.; et al.; Combination of the searches for pair-produced vector-like partners of the third-generation quarks at s√= 13 TeV with the ATLAS detector; American Physical Society; Physical Review Letters; 121; 8-2018; 211801-30
0031-9007
CONICET Digital
CONICET
Autor
Aaboud, M.
Aad, G.
Abbott, B.
Abdinov, O.
Abeloos, B.
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, Maria Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernan Pablo
Bossio Sola, Jonathan David
Daneri, María Florencia
Devesa, Maria Roberta
Marceca, Gino
Otero y Garzon, Gustavo Javier
Piegaia, Ricardo Nestor
Sacerdoti, Sabrina
Zinonos, Z.
Zinser, M.
Ziolkowski, M.
Živković, L.
Zobernig, G.
Zoccoli, A.
Zoch, K.
Nedden, M. zur
Zorbas, T. G.
Zou, R.
Zwalinski, L.
The ATLAS Collaboration
Resumen
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.