Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton-proton collisions at s√=13 TeV with the ATLAS detector
- 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
DOIAbstract
A search for new heavy particles that decay into top-quark pairs is performed using data collected from proton-proton collisions at a centre-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. The integrated luminosity of the data sample is 36.1 fb−1 . Events consistent with top-quark pair production are selected by requiring a single isolated charged lepton, missing transverse momentum and jet activity compatible with a hadronic top-quark decay. Jets identified as likely to contain b-hadrons are required to reduce the background from other Standard Model processes. The invariant mass spectrum of the candidate top-quark pairs is examined for local excesses above the background expectation. No significant deviations ...
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