Publication: Search for tt¯ resonances in fully hadronic final states in pp collisions at √s = 13 TeV with the ATLAS detector
Дата
2020
Авторы
Aad, G.
Abbott, B.
Abbott, D. C.
Abed, Abud, A.
Belotskiy, K.
Belyaev, N. L.
Bulekov, O.
Kurova, A.
Ponomarenko, D.
Proklova, N.
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Аннотация
© 2020, The Author(s).This 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. [Figure not available: see fulltext.]
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Search for tt¯ resonances in fully hadronic final states in pp collisions at √s = 13 TeV with the ATLAS detector / Aad, G. [et al.] // Journal of High Energy Physics. - 2020. - 2020. - № 10. - 10.1007/JHEP10(2020)061
URI
https://www.doi.org/10.1007/JHEP10(2020)061
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https://openrepository.mephi.ru/handle/123456789/22492
https://www.scopus.com/record/display.uri?eid=2-s2.0-85092905089&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000579438800001
https://openrepository.mephi.ru/handle/123456789/22492