About: Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at root s=7 TeV

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About: Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at root s=7 TeV Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1103/PhysRevLett.110.172002
Description	The first measurement of vector-boson production associated with a top quark-antiquark pair in proton-proton collisions at root s = 7 TeV is presented. The results are based on a data set corresponding to an integrated luminosity of 5.0 fb(-1), recorded by the CMS detector at the LHC in 2011. The measurement is performed in two independent channels through a trilepton analysis of t (t) over barZ events and a same-sign dilepton analysis of t (t) over barV (V = W or Z) events. In the trilepton channel a direct measurement of the t (t) over barZ cross section sigma(t (t) over barZ) = 0.28(-0.11)(+0.14) (stat)(-0.03)(+0.06) (syst) pb is obtained. In the dilepton channel a measurement of the t (t) over barV cross section yields sigma(t (t) over barV) = 0.43(-0.15)(+0.17) (stat)(-0.07)(+0.09) (syst) pb. These measurements have a significance, respectively, of 3.3 and 3.0 standard deviations from the background hypotheses and are compatible, within uncertainties, with the corresponding next-to-leading order predictions of 0.137(-0.016)(+0.012) and 0.306(-0.053)(+0.031) pb. DOI: 10.1103/PhysRevLett.110.172002 The first measurement of vector-boson production associated with a top quark-antiquark pair in proton-proton collisions at root s = 7 TeV is presented. The results are based on a data set corresponding to an integrated luminosity of 5.0 fb(-1), recorded by the CMS detector at the LHC in 2011. The measurement is performed in two independent channels through a trilepton analysis of t (t) over barZ events and a same-sign dilepton analysis of t (t) over barV (V = W or Z) events. In the trilepton channel a direct measurement of the t (t) over barZ cross section sigma(t (t) over barZ) = 0.28(-0.11)(+0.14) (stat)(-0.03)(+0.06) (syst) pb is obtained. In the dilepton channel a measurement of the t (t) over barV cross section yields sigma(t (t) over barV) = 0.43(-0.15)(+0.17) (stat)(-0.07)(+0.09) (syst) pb. These measurements have a significance, respectively, of 3.3 and 3.0 standard deviations from the background hypotheses and are compatible, within uncertainties, with the corresponding next-to-leading order predictions of 0.137(-0.016)(+0.012) and 0.306(-0.053)(+0.031) pb. DOI: 10.1103/PhysRevLett.110.172002 (en)
Title	Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at root s=7 TeV Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at root s=7 TeV (en)
skos:prefLabel	Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at root s=7 TeV Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at root s=7 TeV (en)
skos:notation	RIV/00216208:11320/13:10139354!RIV14-MSM-11320___
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(LA08015)
http://linked.open...iv/cisloPeriodika	17
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Finger, Michael Finger, Miroslav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	86683
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/13:10139354
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	LHC; CMS; root s=7 TeV; pp collisions; top quark-antiquark pairs; vector bosons; associated production (en)
http://linked.open.../riv/klicoveSlovo	top quark-antiquark pairs vector bosons associated production root s=7 TeV LHC CMS pp collisions
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[2E9F0FF75D9A]
http://linked.open...i/riv/nazevZdroje	Physical Review Letters
http://linked.open...in/vavai/riv/obor	BF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2217 (xsd:int)
http://linked.open...vavai/riv/projekt	Collaboration of the Czech Republic with CERN
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	110
http://linked.open...iv/tvurceVysledku	Adam, W. Chatrchyan, S. Finger, Michael Finger, Miroslav Khachatryan, V. Bergauer, T. Dragicevic, M. Eroe, J. Fabjan, C. Hrubec, J. Krammer, M. Sirunyan, A. M. Tumasyan, A. Aguilo, E.
http://linked.open...ain/vavai/riv/wos	000318188100004
issn	0031-9007
number of pages	15 (xsd:int)
http://bibframe.org/vocab/doi	10.1103/PhysRevLett.110.172002
http://localhost/t...ganizacniJednotka	11320

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