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Aad, G.CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille; France,Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France
(author)
Search for pair-production of vector-like quarks in pp collision events at √s = 13 TeV with at least one leptonically decaying Z boson and a third-generation quark with the ATLAS detector
- Article/chapterEnglish2023
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Elsevier BV,2023
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LIBRIS-ID:oai:DiVA.org:su-221626
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-221626URI
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https://doi.org/10.1016/j.physletb.2023.138019DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-334616URI
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-512320URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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QC 20230823
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For complete list of authors see http://dx.doi.org/10.1016/j.physletb.2023.138019
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A search for the pair-production of vector-like quarks optimized for decays into a Z boson and a third-generation Standard Model quark is presented, using the full Run 2 dataset corresponding to 139 fb−1 of pp collisions at √s = 13 TeV, collected in 2015–2018 with the ATLAS detector at the Large Hadron Collider. The targeted final state is characterized by the presence of a Z boson with high transverse momentum, reconstructed from a pair of same-flavour leptons with opposite-sign charges, as well as by the presence of b-tagged jets and high-transverse-momentum large-radius jets reconstructed from calibrated smaller-radius jets. Events with exactly two or at least three leptons are used, which are further categorized by the presence of boosted W , Z, and Higgs bosons and top quarks. The categorization is performed using a neural-network-based boosted object tagger to enhance the sensitivity to signal relative to the background. No significant excess above the background expectation is observed and exclusion limits at 95% confidence level are set on the masses of the vector-like partners T and B of the top and bottom quarks, respectively. The limits depend on the branching ratio configurations and, in the case of 100% branching ratio for T → Zt and 100% branching ratio for B → Zb, this search sets the most stringent limits to date, allowing mT > 1.60 TeV and mB > 1.42 TeV, respectively.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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Andrean, Stefio Y.,1991-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)stan8823
(author)
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Backman, Filip,1991-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)fiba9596
(author)
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Barranco Navarro, Laura,1990-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)laba6803
(author)
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Bohm, Christian,1946-KTH,Stockholms universitet,Fysikum,Partikel- och astropartikelfysik(Swepub:kth)u128x0hb
(author)
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Clément, Christophe,1972-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)clement
(author)
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Dunne, Katherine,1987-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)duka4053
(author)
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Hellman, Sten,1956-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)sten
(author)
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Ingebretsen Carlson, Tom,1989-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)toca8159
(author)
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Lou, Xuanhong,1995-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)xulo6599
(author)
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Milstead, David A.,1970-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)milstead
(author)
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Moa, Torbjörn,1953-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)moa
(author)
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Pasuwan, Patrawan,1990-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)ppasu
(author)
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Pereira Sanchez, Laura,1995-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)lape0222
(author)
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Shaikh, Nabila W.,1989-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)nash8517
(author)
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Silverstein, Samuel B.,1967-Stockholms universitet,Fysikum(Swepub:su)silver
(author)
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Sjölin, Jörgen,1968-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)sjolin
(author)
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Strandberg, Sara,1977-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)strandberg
(author)
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Strübig, Antonia,1985-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)anst7511
(author)
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Valdés Santurio, Eduardo,1984-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)edval
(author)
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Zwalinski, L.CERN, Geneva; Switzerland
(author)
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Lundberg, OlofKTH,Partikel- och astropartikelfysik(Swepub:kth)u142u9nh
(author)
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Lund-Jensen, BengtKTH,Partikel- och astropartikelfysik(Swepub:kth)u13bp6vd
(author)
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Ripellino, GiuliaKTH,Partikel- och astropartikelfysik(Swepub:kth)u13f31yo
(author)
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Shaheen, RabiaKTH,Partikel- och astropartikelfysik(Swepub:kth)u1uqh9ek
(author)
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Shope, David R.KTH,Partikel- och astropartikelfysik(Swepub:kth)u17s7aqp
(author)
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Strandberg, JonasKTH,Partikel- och astropartikelfysik(Swepub:kth)u1midk9y
(author)
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Asimakopoulou, Eleni M.Uppsala universitet,Högenergifysik(Swepub:uu)eleas553
(author)
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Bergeås Kuutmann, Elin,1980-Uppsala universitet,Högenergifysik(Swepub:uu)elibe340
(author)
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Brenner, RichardUppsala universitet,Högenergifysik(Swepub:uu)richbren
(author)
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Dimitriadi, ChristinaUppsala universitet,Högenergifysik,Univ Bonn, Phys Inst, Bonn, Germany.(Swepub:uu)chrdi726
(author)
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Ekelöf, TordUppsala universitet,Högenergifysik(Swepub:uu)tordeke
(author)
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Ellajosyula, VenugopalUppsala universitet,Högenergifysik(Swepub:uu)venel845
(author)
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Ellert, MattiasUppsala universitet,Högenergifysik(Swepub:uu)mel03009
(author)
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Ferrari, Arnaud,1973-Uppsala universitet,Högenergifysik(Swepub:uu)arfer499
(author)
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Gonzalez Suarez, RebecaUppsala universitet,Högenergifysik(Swepub:uu)rebgo209
(author)
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Mathisen, ThomasUppsala universitet,Högenergifysik(Swepub:uu)thoma814
(author)
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Ördek, SerhatUppsala universitet,Högenergifysik(Swepub:uu)seror924
(author)
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Steentoft, JonasUppsala universitet,Högenergifysik(Swepub:uu)jonst734
(author)
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Sunneborn Gudnadottir, OlgaUppsala universitet,Högenergifysik(Swepub:uu)olggu198
(author)
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CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille; FranceAix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France
(creator_code:org_t)
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In:Physics Letters B: Elsevier BV8430370-26931873-2445
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