Search For Standard Model Production Of Four Top Quarks With Same-Sign And Multilepton Final States İn Proton–Proton Collisions At s?=13TeV

Bilki, Burak; ., ve diger

Search For Standard Model Production Of Four Top Quarks With Same-Sign And Multilepton Final States İn Proton–Proton Collisions At s?=13TeV

dc.authorid	249433	en_US
dc.contributor.author	Bilki, Burak
dc.contributor.author	., ve diger
dc.date.accessioned	2019-03-28T13:26:45Z
dc.date.available	2019-03-28T13:26:45Z
dc.date.issued	2018
dc.department	İstanbul Beykent Üniversitesi	en_US
dc.description.abstract	A search for standard model production of four top quarks (tt¯tt¯tt¯tt¯) is reported using events containing at least three leptons (e,?e,?) or a same-sign lepton pair. The events are produced in proton–proton collisions at a center-of-mass energy of 13TeVTeV at the LHC, and the data sample, recorded in 2016, corresponds to an integrated luminosity of 35.9fb?1fb?1. Jet multiplicity and flavor are used to enhance signal sensitivity, and dedicated control regions are used to constrain the dominant backgrounds. The observed and expected signal significances are, respectively, 1.6 and 1.0 standard deviations, and the tt¯tt¯tt¯tt¯ cross section is measured to be 16.9+13.8?11.416.9?11.4+13.8 fbfb, in agreement with next-to-leading-order standard model predictions. These results are also used to constrain the Yukawa coupling between the top quark and the Higgs boson to be less than 2.1 times its expected standard model value at 95% confidence level	en_US
dc.identifier.doi	10.1140/epjc/s10052-018-5607-5
dc.identifier.issn	1434-6044
dc.identifier.issn	1434-6052
dc.identifier.pmid	31265001	en_US
dc.identifier.scopus	2-s2.0-85042446443
dc.identifier.scopusquality	Q1	en_US
dc.identifier.uri	https://doi.org/10.1140/epjc/s10052-018-5607-5
dc.identifier.wos	WOS:000425395800003	en_US
dc.identifier.wosquality	Q2	en_US
dc.indekslendigikaynak	Web of Science	en_US
dc.indekslendigikaynak	PubMed	en_US
dc.language.iso	en	en_US
dc.publisher	Springer Link	tr_TR
dc.relation.publicationcategory	Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı	en_US
dc.subject	Standard model	tr_TR
dc.subject	Higgs boson	tr_TR
dc.title	Search For Standard Model Production Of Four Top Quarks With Same-Sign And Multilepton Final States İn Proton–Proton Collisions At s?=13TeV	en_US
dc.type	Article	en_US