Measurement of double-differential cross sections for top quark pair production in pp collisions at √s=8TeV and impact on parton distribution functions

dc.contributor.authorSirunyan AM
dc.contributor.authorTumasyan A
dc.contributor.authorAdam W
dc.contributor.authorAsilar E
dc.contributor.authorBergauer T
dc.contributor.authorBrandstetter J
dc.contributor.authorBrondolin E
dc.contributor.authorDragicevic M
dc.contributor.authorErö J
dc.contributor.authorFlechl M
dc.contributor.authorFriedl M
dc.contributor.authorFrühwirth R
dc.contributor.authorGhete VM
dc.contributor.authorHartl C
dc.contributor.authorHörmann N
dc.contributor.authorHrubec J
dc.contributor.authorJeitler M
dc.contributor.authorKönig A
dc.contributor.authorKrätschmer I
dc.contributor.authorLiko D
dc.contributor.authorMatsushita T
dc.contributor.authorMikulec I
dc.contributor.authorRabady D
dc.contributor.authorRad N
dc.contributor.authorRahbaran B
dc.contributor.authorRohringer H
dc.contributor.authorSchieck J
dc.contributor.authorStrauss J
dc.contributor.authorWaltenberger W
dc.contributor.authorWulz CE
dc.contributor.authorDvornikov O
dc.contributor.authorMakarenko V
dc.contributor.authorMossolov V
dc.contributor.authorSuarez Gonzalez J
dc.contributor.authorZykunov V
dc.contributor.authorShumeiko N
dc.contributor.authorAlderweireldt S
dc.contributor.authorDe Wolf EA
dc.contributor.authorJanssen X
dc.contributor.authorLauwers J
dc.contributor.authorVan De Klundert M
dc.contributor.authorVan Haevermaet H
dc.contributor.authorVan Mechelen P
dc.contributor.authorVan Remortel N
dc.contributor.authorVan Spilbeeck A
dc.contributor.authorAbu Zeid S
dc.contributor.authorBlekman F
dc.contributor.authorD Hondt J
dc.contributor.authorDaci N
dc.contributor.authorDe Bruyn I
dc.contributor.authorDeroover K
dc.contributor.authorLowette S
dc.contributor.authorMoortgat S
dc.contributor.authorMoreels L
dc.contributor.authorOlbrechts A
dc.contributor.authorPython Q
dc.contributor.authorSkovpen K
dc.contributor.authorTavernier S
dc.contributor.authorVan Doninck W
dc.contributor.authorVan Mulders P
dc.contributor.authorVan Parijs I
dc.contributor.authorBrun H
dc.contributor.authorClerbaux B
dc.contributor.authorDe Lentdecker G
dc.contributor.authorDelannoy H
dc.contributor.authorFasanella G
dc.contributor.authorFavart L
dc.contributor.authorGoldouzian R
dc.contributor.authorGrebenyuk A
dc.contributor.authorKarapostoli G
dc.contributor.authorLenzi T
dc.contributor.authorLéonard A
dc.contributor.authorLuetic J
dc.contributor.authorMaerschalk T
dc.contributor.authorMarinov A
dc.contributor.authorRandle-conde A
dc.contributor.authorSeva T
dc.contributor.authorVander Velde C
dc.contributor.authorVanlaer P
dc.contributor.authorVannerom D
dc.contributor.authorYonamine R
dc.contributor.authorZenoni F
dc.contributor.authorZhang F
dc.contributor.authorCornelis T
dc.contributor.authorDobur D
dc.contributor.authorFagot A
dc.contributor.authorGul M
dc.contributor.authorKhvastunov I
dc.contributor.authorPoyraz D
dc.contributor.authorSalva S
dc.contributor.authorSchöfbeck R
dc.contributor.authorTytgat M
dc.contributor.authorVan Driessche W
dc.contributor.authorYazgan E
dc.contributor.authorZaganidis N
dc.contributor.authorBakhshiansohi H
dc.contributor.authorBondu O
dc.contributor.authorBrochet S
dc.contributor.authorBruno G
dc.contributor.authorCaudron A
dc.date.accessioned2018-06-26T02:25:43Z
dc.date.available2018-06-26T02:25:43Z
dc.date.issued2017en
dc.date.updated2018-03-01T00:54:10Z
dc.description.abstract© 2017, CERN for the benefit of the CMS collaboration. Normalized double-differential cross sections for top quark pair (t t ¯) production are measured in pp collisions at a centre-of-mass energy of 8TeV with the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 19.7fb-1. The measurement is performed in the dilepton e ± μ ∓ final state. The t t ¯ cross section is determined as a function of various pairs of observables characterizing the kinematics of the top quark and t t ¯ system. The data are compared to calculations using perturbative quantum chromodynamics at next-to-leading and approximate next-to-next-to-leading orders. They are also compared to predictions of Monte Carlo event generators that complement fixed-order computations with parton showers, hadronization, and multiple-parton interactions. Overall agreement is observed with the predictions, which is improved when the latest global sets of proton parton distribution functions are used. The inclusion of the measured t t ¯ cross sections in a fit of parametrized parton distribution functions is shown to have significant impact on the gluon distribution.en
dc.identifier.doihttps://doi.org/10.1140/epjc/s10052-017-4984-5
dc.identifier.issn1434-6044
dc.identifier.issn1434-6052
dc.identifier.urihttp://hdl.handle.net/10092/15603
dc.languageEnglish
dc.language.isoen
dc.rightsCreative Commons Attribution 4.0 Licenseen
dc.subjectCMS Collaborationen
dc.subject.anzsrcFields of Research::51 - Physical sciences::5107 - Particle and high energy physics::510703 - Particle physicsen
dc.titleMeasurement of double-differential cross sections for top quark pair production in pp collisions at √s=8TeV and impact on parton distribution functionsen
dc.typeJournal Articleen
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