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A search for pair-produced resonances in four-jet final states at root s=13 TeV with the ATLAS detector
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.ORCID-id: 0000-0001-6945-1916
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
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Rekke forfattare: 28632018 (engelsk)Inngår i: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 78, nr 3Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A search for massive coloured resonances which are pair-produced and decay into two jets is presented. The analysis uses 36.7 fb(-1) of root s = 13 TeV pp collision data recorded by the ATLAS experiment at the LHC in 2015 and 2016. No significant deviation from the background prediction is observed. Results are interpreted in a SUSY simplified model where the lightest supersymmetric particle is the top squark, (t) over tilde, which decays promptly into two quarks through R-parity-violating couplings. Top squarks with masses in the range 100 GeV < m((T) over tilde) < 410 GeV are excluded at 95% confidence level. If the decay is into a b-quark and a light quark, a dedicated selection requiring two b-tags is used to exclude masses in the ranges 100 GeV < m((t) over tilde) < 470 GeV and 480 GeV < m(<(t)over tilde>) < 610 GeV. Additional limits are set on the pair-production of massive colour-octet resonances.

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Springer, 2018. Vol. 78, nr 3
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URN: urn:nbn:se:kth:diva-225873DOI: 10.1140/epjc/s10052-018-5693-4ISI: 000428180600005OAI: oai:DiVA.org:kth-225873DiVA, id: diva2:1196747
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QC 20180411

Tilgjengelig fra: 2018-04-11 Laget: 2018-04-11 Sist oppdatert: 2018-06-04bibliografisk kontrollert

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Kastanas, K. A.Lund-Jensen, B.Ripellino, G.Sidebo, P. E.Strandberg, J.

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