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Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at √s=13 TeV with the ATLAS detector
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SYSNO ASEP 0501161 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at √s=13 TeV with the ATLAS detector Author(s) Aaboud, M. (MA)
Aad, G. (FR)
Abbott, B. (US)
Chudoba, Jiří (FZU-D) RID, ORCID
Hejbal, Jiří (FZU-D) RID, ORCID
Hladík, Ondřej (FZU-D) ORCID
Jakoubek, Tomáš (FZU-D) RID, ORCID
Kepka, Oldřich (FZU-D) RID, ORCID
Kroll, Jiří (FZU-D) ORCID
Kupčo, Alexander (FZU-D) RID, ORCID
Kůs, Vlastimil (FZU-D) RID
Lokajíček, Miloš (FZU-D) RID, ORCID
Lysák, Roman (FZU-D) RID, ORCID
Marčišovský, Michal (FZU-D) RID, ORCID
Mikeštíková, Marcela (FZU-D) RID, ORCID
Němeček, Stanislav (FZU-D) RID, ORCID
Penc, Ondřej (FZU-D) ORCID
Šícho, Petr (FZU-D) RID, ORCID
Staroba, Pavel (FZU-D) RID, ORCID
Svatoš, Michal (FZU-D) RID, ORCID
Taševský, Marek (FZU-D) RID, ORCIDNumber of authors 2864 Article number 85 Source Title Journal of High Energy Physics. - : Springer - ISSN 1029-8479
Roč. 2017, č. 12 (2017), s. 1-56Number of pages 56 s. Publication form Online - E Language eng - English Country US - United States Keywords ATLAS ; CERN LHC Coll ; supersymmetry ; background ; chargino ; squark: pair production ; stop: mass: lower limit ; experimental results ; 13000 GeV-cms Subject RIV BF - Elementary Particles and High Energy Physics OECD category Particles and field physics R&D Projects LM2015058 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 UT WOS 000418558900001 EID SCOPUS 85039414729 DOI 10.1007/JHEP12(2017)085 Annotation A search for pair production of a scalar partner of the top quark in events with four or more jets plus missing transverse momentum is presented. An analysis of 36.1 fb−1 of √s=13 TeV proton-proton collisions collected using the ATLAS detector at the LHC yields no significant excess over the expected Standard Model background. To interpret the results a simplified supersymmetric model is used where the top squark is assumed to decay via t~1→t(∗)upchi~01 and t~1→bupchi~±1→bW(∗)upchi~01 , where χ01 (χ±1 ) denotes the lightest neutralino (chargino). Exclusion limits are placed in terms of the top-squark and neutralino masses. Assuming a branching ratio of 100% to tupchi~01 , top-squark masses in the range 450–1000 GeV are excluded for upchi~01 masses below 160 GeV. In the case where mt~1∼mt+mχ~01 , top-squark masses in the range 235–590 GeV are excluded.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2019
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