Measurement Of The Cross Section For Top Quark Pair Production İn Association With A W Or Z Boson İn Proton-Proton Collisions At S?=13s=13 Tev

Bilki, Burak; ., ve diger

Measurement Of The Cross Section For Top Quark Pair Production İn Association With A W Or Z Boson İn Proton-Proton Collisions At S?=13s=13 Tev

dc.authorid	249433	en_US
dc.contributor.author	Bilki, Burak
dc.contributor.author	., ve diger
dc.date.accessioned	2019-03-28T12:07:23Z
dc.date.available	2019-03-28T12:07:23Z
dc.date.issued	2018
dc.department	İstanbul Beykent Üniversitesi	en_US
dc.description.abstract	A measurement is performed of the cross section of top quark pair production in association with a W or Z boson using proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC. The data sample corresponds to an integrated luminosity of 35.9 fb?1, collected by the CMS experiment in 2016. The measurement is performed in the same-sign dilepton, three- and four-lepton final states. The production cross sections are measured to be ?(tt¯W)=0.77+0.12?0.11(stat)+0.13?0.12(syst)pb?(tt¯W)=0.77?0.11+0.12(stat)?0.12+0.13(syst)pb and ?(tt¯Z)=0.99+0.09?0.08(stat)+0.12?0.10(syst)pb?(tt¯Z)=0.99?0.08+0.09(stat)?0.10+0.12(syst)pb. The expected (observed) signal significance for the tt¯Wtt¯W production in same-sign dilepton channel is found to be 4.5 (5.3) standard deviations, while for the tt¯Ztt¯Z production in three- and four-lepton channels both the expected and the observed significances are found to be in excess of 5 standard deviations. The results are in agreement with the standard model predictions and are used to constrain the Wilson coefficients for eight dimension-six operators describing new interactions that would modify tt¯Wtt¯W and tt¯Ztt¯Z production.	en_US
dc.identifier.doi	10.1007/JHEP08(2018)011
dc.identifier.issn	1029-8479
dc.identifier.scopus	2-s2.0-85052077161	en_US
dc.identifier.scopusquality	Q1	en_US
dc.identifier.uri	https://doi.org/10.1007/JHEP08(2018)011
dc.identifier.wos	WOS:000440833700003	en_US
dc.identifier.wosquality	Q1	en_US
dc.indekslendigikaynak	Web of Science	en_US
dc.indekslendigikaynak	Scopus	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	Hadron-Hadron scattering	tr_TR
dc.subject	Top physics	tr_TR
dc.title	Measurement Of The Cross Section For Top Quark Pair Production İn Association With A W Or Z Boson İn Proton-Proton Collisions At S?=13s=13 Tev	en_US
dc.type	Article	en_US