Measurement of single top-quark production in association with a W boson in the single-lepton channel at √s=8TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00551054" target="_blank" >RIV/68378271:_____/21:00551054 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0326371" target="_blank" >http://hdl.handle.net/11104/0326371</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-021-09371-7" target="_blank" >10.1140/epjc/s10052-021-09371-7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of single top-quark production in association with a W boson in the single-lepton channel at √s=8TeV with the ATLAS detector

Popis výsledku v původním jazyce

The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s=8 TeVsqrt{s} = 8, ext {TeV}s ​=8TeV. The dataset corresponds to an integrated luminosity of 20.2 fb−120.2, ext {fb}^{-1}20.2fb−1, and was collected in 2012 by the ATLAS detector at the Large Hadron Collider at CERN. The analysis is performed in the single-lepton channel. Events are selected by requiring one isolated lepton (electron or muon) and at least three jets. A neural network is trained to separate the tW signal from the dominant ttˉt{ ar{t}}ttˉ background. The cross-section is extracted from a binned profile maximum-likelihood fit to a two-dimensional discriminant built from the neural-network output and the invariant mass of the hadronically decaying W boson. The measured cross-section is σtW=26±7 pbsigma _{tW} = 26 pm 7, ext {pb}σtW​=26±7pb, in good agreement with the Standard Model expectation.

Název v anglickém jazyce

Measurement of single top-quark production in association with a W boson in the single-lepton channel at √s=8TeV with the ATLAS detector

Popis výsledku anglicky

The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s=8 TeVsqrt{s} = 8, ext {TeV}s ​=8TeV. The dataset corresponds to an integrated luminosity of 20.2 fb−120.2, ext {fb}^{-1}20.2fb−1, and was collected in 2012 by the ATLAS detector at the Large Hadron Collider at CERN. The analysis is performed in the single-lepton channel. Events are selected by requiring one isolated lepton (electron or muon) and at least three jets. A neural network is trained to separate the tW signal from the dominant ttˉt{ ar{t}}ttˉ background. The cross-section is extracted from a binned profile maximum-likelihood fit to a two-dimensional discriminant built from the neural-network output and the invariant mass of the hadronically decaying W boson. The measured cross-section is σtW=26±7 pbsigma _{tW} = 26 pm 7, ext {pb}σtW​=26±7pb, in good agreement with the Standard Model expectation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/LTT17018" target="_blank" >LTT17018: Získávání nových poznatků o mikrosvětě v infrastruktuře CERN</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Svazek periodika

81

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

29

Strana od-do

720

Kód UT WoS článku

000683750400006

EID výsledku v databázi Scopus

2-s2.0-85112563688