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 detectorVisa övriga samt affilieringar
Antal upphovsmän: 28842018 (Engelska)Ingår i: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 78, nr 7, artikel-id 565Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
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 from the Standard Model predictions are found. Exclusion limits are set on the production cross-section times branching ratio for hypothetical Z' bosons, Kaluza-Kein gluons and Kaluza-Klein gravitons that decay into top-quark pairs.
Ort, förlag, år, upplaga, sidor
2018. Vol. 78, nr 7, artikel-id 565
Nationell ämneskategori
Subatomär fysik
Identifikatorer
URN: urn:nbn:se:uu:diva-361533DOI: 10.1140/epjc/s10052-018-5995-6ISI: 000438114500005OAI: oai:DiVA.org:uu-361533DiVA, id: diva2:1252184
Forskningsfinansiär
VetenskapsrådetEU, Europeiska forskningsrådetEU, FP7, Sjunde ramprogrammetEU, Horisont 2020Danmarks GrundforskningsfondWallenbergstiftelsernaDeutsche Forschungsgemeinschaft (DFG)
Anmärkning
For complete list of authors see http://dx.doi.org/10.1140/epjc/s10052-018-5995-6
WoS title: Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton-proton collisions at root s=13 TeV with the ATLAS detector
2018-10-012018-10-012018-10-01Bibliografiskt granskad