W+W? Boson Pair Production İn Proton-Proton Collisions at ? s = 13 TeV

Bilki, Burak; Güler, Emine Gürpınar

W+W? Boson Pair Production İn Proton-Proton Collisions at ? s = 13 TeV

dc.authorid	249433	en_US
dc.authorid	291820	en_US
dc.contributor.author	Bilki, Burak
dc.contributor.author	Güler, Emine Gürpınar
dc.date.accessioned	2021-01-31T15:51:24Z
dc.date.available	2021-01-31T15:51:24Z
dc.date.issued	2020
dc.department	İstanbul Beykent Üniversitesi	en_US
dc.description.abstract	A measurement of the W+W- boson pair production cross section in proton-proton collisions at root s = 13 TeV is presented. The data used in this study are collected with the CMS detector at the CERN LHC and correspond to an integrated luminosity of 35.9 fb(-1). The W+W- candidate events are selected by requiring two oppositely charged leptons (electrons or muons). Two methods for reducing background contributions are employed. In the first one, a sequence of requirements on kinematic quantities is applied allowing a measurement of the total production cross section, 117.6 +/- 6.8 pb, which agrees well with the theoretical prediction. Fiducial cross sections are also reported for events with zero or one jet, and the change in the zero-jet fiducial cross section with the jet transverse momentum threshold is measured. Normalized differential cross sections are reported within the fiducial region. A second method for suppressing background contributions employs two random forest classifiers. The analysis based on this method includes a measurement of the total production cross section and also a measurement of the normalized jet multiplicity distribution in W+W- events. Finally, a dilepton invariant mass distribution is used to probe for physics beyond the standard model in the context of an effective field theory, and constraints on the presence of dimension-6 operators are derived.	en_US
dc.identifier.citation	PHYSICAL REVIEW D, cilt.102, 2020	en_US
dc.identifier.doi	10.1103/physrevd.102.092001
dc.identifier.issn	2470-0010
dc.identifier.scopus	2-s2.0-85096654850	en_US
dc.identifier.scopusquality	Q1	en_US
dc.identifier.uri	https://doi.org/10.1103/physrevd.102.092001
dc.identifier.wos	WOS:000587596500003	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	The CMS Collaboration	en_US
dc.relation.publicationcategory	Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı	en_US
dc.subject	CMS	en_US
dc.subject	Cms Experıment	en_US
dc.title	W+W? Boson Pair Production İn Proton-Proton Collisions at ? s = 13 TeV	en_US
dc.type	Article	en_US