Search for resonant tt¯tt¯ production in proton-proton collisions at √s=13 TeV

Search for resonant tt¯tt¯ production in proton-proton collisions at √s=13 TeV

Bibliographische Detailangaben
Parent link:Journal of High Energy Physics
Vol. 2019, iss. 4.— 2019.— [31, 54 p.]
Körperschaften: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов, Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Научно-производственная лаборатория "Импульсно-пучковых, электроразрядных и плазменных технологий"
Weitere Verfasser: Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Asilar E. Ece, Bergauer T. Thomas, Babaev A. A. Anton Anatoljevich, Okhotnikov V. V. Vitaly Vladimirovich
Zusammenfassung:Title screen
A search for a heavy resonance decaying into a top quark and antiquark (tt¯)(tt¯) pair is performed using proton-proton collisions at s√=13s=13 TeV. The search uses the data set collected with the CMS detector in 2016, which corresponds to an integrated luminosity of 35.9 fb−1. The analysis considers three exclusive final states and uses reconstruction techniques that are optimized for top quarks with high Lorentz boosts, which requires the use of nonisolated leptons and jet substructure techniques. No significant excess of events relative to the expected yield from standard model processes is observed. Upper limits on the production cross section of heavy resonances decaying to a tt¯tt¯ pair are calculated. Limits are derived for a leptophobic topcolor Z′ resonance with widths of 1, 10, and 30%, relative to the mass of the resonance, and exclude masses up to 3.80, 5.25, and 6.65 TeV, respectively. Kaluza-Klein excitations of the gluon in the Randall-Sundrum model are excluded up to 4.55 TeV. To date, these are the most stringent limits on tt¯tt¯ resonances.
Режим доступа: по договору с организацией-держателем ресурса
Sprache:Englisch
Veröffentlicht: 2019
Schlagworte:
электронный ресурс
труды учёных ТПУ
Hadron-Hadron scattering (experiments)
Beyond Standard Model
адрон-адронное рассеяние
Online-Zugang:https://doi.org/10.1007/JHEP04(2019)031
Format: Elektronisch Buchkapitel
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662610

Ähnliche Einträge

Ähnliche Einträge