Measurement of the tt production cross-section and lepton differential distributions in e mu dilepton events from pp collisions at root s=13 TeV with the ATLAS detector

Basit Öğe Kaydı
dc.WoS.categoriesPhysics, Particles & Fieldsen_US
dc.authorid0000-0001-5050-8441en_US
dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2020-11-13T07:27:35Z
dc.date.available2020-11-13T07:27:35Z
dc.date.issued2020-06-12
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description70 pagesen_US
dc.description.abstractThe inclusive top quark pair (tt<overbar></mml:mover>) production cross-section sigma tt<overbar></mml:mover> has been measured in proton-proton collisions at <mml:msqrt>s</mml:msqrt>=13<mml:mspace width="0.166667em"></mml:mspace>TeV, using 36.1 fb-1 of data collected in 2015-2016 by the ATLAS experiment at the LHC. Using events with an opposite-charge e mu pair and b-tagged jets, the cross-section is measured to be: <disp-formula id="Equ10"><mml:mtable><mml:mtr><mml:mtd columnalign="right">sigma tt<overbar></mml:mover>=826.4 +/- 3.6<mml:mspace width="0.166667em"></mml:mspace>(stat)<mml:mspace width="4pt"></mml:mspace>+/- 11.5<mml:mspace width="0.166667em"></mml:mspace>(syst)<mml:mspace width="4pt"></mml:mspace>+/- 15.7<mml:mspace width="0.166667em"></mml:mspace>(lumi)<mml:mspace width="4pt"></mml:mspace>+/- 1.9<mml:mspace width="0.166667em"></mml:mspace>(beam)<mml:mspace width="0.166667em"></mml:mspace>pb,</mml:mtd></mml:mtr></mml:mtable><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="10052_2020_7907_Article_Equ10.gif" position="anchor"></graphic></disp-formula>where the uncertainties reflect the limited size of the data sample, experimental and theoretical systematic effects, the integrated luminosity, and the LHC beam energy, giving a total uncertainty of 2.4%. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. It is used to determine the top quark pole mass via the dependence of the predicted cross-section on mtpole, giving mtpole=173.1-2.1+2.0<mml:mspace width="0.166667em"></mml:mspace>GeV. It is also combined with measurements at <mml:msqrt>s</mml:msqrt><mml:mo>=7<mml:mspace width="0.166667em"></mml:mspace>TeV and <mml:msqrt>s</mml:msqrt><mml:mo>=8<mml:mspace width="0.166667em"></mml:mspace>TeV to derive ratios and double ratios of t<mml:mover accent="true">t<mml:mo stretchy="false"><overbar></mml:mover> and Z cross-sections at different energies. The same event sample is used to measure absolute and normalised differential cross-sections as functions of single-lepton and dilepton kinematic variables, and the results are compared with predictions from various Monte Carlo event generators.en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1140/epjc/s10052-020-7907-9en_US
dc.identifier.issn1434-6052
dc.identifier.issn1434-6044
dc.identifier.scopus2-s2.0-85086475740en_US
dc.identifier.urihttps://hdl.handle.net/11411/2637
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-020-7907-9
dc.identifier.wosWOS:000546998500003en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.issue6en_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors1000+en_US
dc.publisherSpringeren_US
dc.relation.ispartofEuropean Physical Journal Cen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectPlus plusen_US
dc.subjectParton Distributionsen_US
dc.titleMeasurement of the tt production cross-section and lepton differential distributions in e mu dilepton events from pp collisions at root s=13 TeV with the ATLAS detectoren_US
dc.typeArticleen_US
dc.volume80en_US

Dosyalar

Orijinal paket
Listeleniyor 1 - 1 / 1
Küçük Resim
İsim:
2020WoSCetin.pdf
Boyut:
2.86 MB
Biçim:
Adobe Portable Document Format
Açıklama:
İndir
Lisans paketi
Listeleniyor 1 - 1 / 1
Küçük Resim Yok
İsim:
license.txt
Boyut:
1.71 KB
Biçim:
Item-specific license agreed upon to submission
Açıklama:
İndir

Koleksiyon

Faculty of Engineering and Natural Sciences
Scopus Indexed Publications
Web of Science Indexed Publications