Measurement of the production cross-section of a single top quark in association with a W boson at 8 TeV with the ATLAS experiment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00470742" target="_blank" >RIV/68378271:_____/16:00470742 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/16:00309073 RIV/68407700:21340/16:00309073 RIV/68407700:21670/16:00309073 RIV/00216208:11320/16:10332021 RIV/61989592:15310/16:33159075

Výsledek na webu

<a href="http://dx.doi.org/10.1007/JHEP01(2016)064" target="_blank" >http://dx.doi.org/10.1007/JHEP01(2016)064</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP01(2016)064" target="_blank" >10.1007/JHEP01(2016)064</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the production cross-section of a single top quark in association with a W boson at 8 TeV with the ATLAS experiment

Popis výsledku v původním jazyce

The cross-section for the production of a single top quark in association with a W boson in proton-proton collisions at s=8TeV is measured. The dataset corresponds to an integrated luminosity of 20.3 fb1, collected by the ATLAS detector in 2012 at the Large Hadron Collider at CERN. Events containing two leptons and one central b-jet are selected. The W t signal is separated from the backgrounds using boosted decision trees, each of which combines a number of discriminating variables into one classifier. Production of W t events is observed with a significance of 7.7σ. The cross-section is extracted in a profile likelihood fit to the classifier output distributions. The W t cross-section, inclusive of decay modes, is measured to be 23.0  1.3(stat.)+ 3.2 3.5 (syst.)1.1(lumi.) pb. The measured cross-section is used to extract a value for the CKM matrix element |Vtb | of 1.01 0.10 and a lower limit of 0.80 at the 95% confidence level.

Název v anglickém jazyce

Measurement of the production cross-section of a single top quark in association with a W boson at 8 TeV with the ATLAS experiment

Popis výsledku anglicky

The cross-section for the production of a single top quark in association with a W boson in proton-proton collisions at s=8TeV is measured. The dataset corresponds to an integrated luminosity of 20.3 fb1, collected by the ATLAS detector in 2012 at the Large Hadron Collider at CERN. Events containing two leptons and one central b-jet are selected. The W t signal is separated from the backgrounds using boosted decision trees, each of which combines a number of discriminating variables into one classifier. Production of W t events is observed with a significance of 7.7σ. The cross-section is extracted in a profile likelihood fit to the classifier output distributions. The W t cross-section, inclusive of decay modes, is measured to be 23.0  1.3(stat.)+ 3.2 3.5 (syst.)1.1(lumi.) pb. The measured cross-section is used to extract a value for the CKM matrix element |Vtb | of 1.01 0.10 and a lower limit of 0.80 at the 95% confidence level.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

—

Svazek periodika

2016

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

50

Strana od-do

—

Kód UT WoS článku

000368174800001

EID výsledku v databázi Scopus

2-s2.0-84971238686