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Article: Search for tt¯ resonances in fully hadronic final states in pp collisions at √s = 13 TeV with the ATLAS detector

TitleSearch for tt¯ resonances in fully hadronic final states in pp collisions at √s = 13 TeV with the ATLAS detector
Authors
KeywordsJet substructure
Beyond Standard Model
Hadron-Hadron scattering (experiments)
Heavy quark production
Jets
Issue Date2020
PublisherSpringer Verlag (Germany): SCOAP3. The Journal's web site is located at http://www.springer.com/physics/particle+and+nuclear+physics/journal/13130
Citation
Journal of High Energy Physics, 2020, v. 2020 n. 10, p. article no. 061 How to Cite?
AbstractThis paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of s√ = 13 TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a tt¯ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new Z′ boson in a topcolor-assisted-technicolor model. The Z′ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively.
Descriptioneid_2-s2.0-85092905089
Persistent Identifierhttp://hdl.handle.net/10722/294123
ISSN
2020 Impact Factor: 5.81
2020 SCImago Journal Rankings: 0.998
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLo, CY-
dc.contributor.authorParedes Hernandez, DP-
dc.contributor.authorSalvucci, A-
dc.contributor.authorTu, Y-
dc.contributor.authorTam, KC-
dc.contributor.authorThe ATLAS collaboration-
dc.date.accessioned2020-11-23T08:26:38Z-
dc.date.available2020-11-23T08:26:38Z-
dc.date.issued2020-
dc.identifier.citationJournal of High Energy Physics, 2020, v. 2020 n. 10, p. article no. 061-
dc.identifier.issn1029-8479-
dc.identifier.urihttp://hdl.handle.net/10722/294123-
dc.descriptioneid_2-s2.0-85092905089-
dc.description.abstractThis paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of s√ = 13 TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a tt¯ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new Z′ boson in a topcolor-assisted-technicolor model. The Z′ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively.-
dc.languageeng-
dc.publisherSpringer Verlag (Germany): SCOAP3. The Journal's web site is located at http://www.springer.com/physics/particle+and+nuclear+physics/journal/13130-
dc.relation.ispartofJournal of High Energy Physics-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectJet substructure-
dc.subjectBeyond Standard Model-
dc.subjectHadron-Hadron scattering (experiments)-
dc.subjectHeavy quark production-
dc.subjectJets-
dc.titleSearch for tt¯ resonances in fully hadronic final states in pp collisions at √s = 13 TeV with the ATLAS detector-
dc.typeArticle-
dc.identifier.emailParedes Hernandez, DP: dparedes@hku.hk-
dc.identifier.emailTu, Y: yanjuntu@hku.hk-
dc.identifier.authorityTu, Y=rp01971-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1007/JHEP10(2020)061-
dc.identifier.hkuros318813-
dc.identifier.volume2020-
dc.identifier.issue10-
dc.identifier.spagearticle no. 061-
dc.identifier.epagearticle no. 061-
dc.identifier.isiWOS:000579438800001-
dc.publisher.placeGermany-
dc.identifier.issnl1029-8479-

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