Observation of the associated production of a top quark and a Z boson in pp collisions at root s=13 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73602293" target="_blank" >RIV/61989592:15310/20:73602293 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/20:00346769 RIV/68407700:21340/20:00346769 RIV/68407700:21670/20:00346769 RIV/00216208:11320/20:10423574

Výsledek na webu

<a href="https://link.springer.com/article/10.1007%2FJHEP07%282020%29124" target="_blank" >https://link.springer.com/article/10.1007%2FJHEP07%282020%29124</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP07(2020)124" target="_blank" >10.1007/JHEP07(2020)124</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Observation of the associated production of a top quark and a Z boson in pp collisions at root s=13 TeV with the ATLAS detector

Popis výsledku v původním jazyce

Single top-quark production in association with a Z boson, where the Z boson decays to a pair of charged leptons, is measured in the trilepton channel. The proton-proton collision data collected by the ATLAS experiment from 2015 to 2018 at a centre-of-mass energy of 13 TeV are used, corresponding to an integrated luminosity of 139 fb(-1). Events containing three isolated charged leptons (electrons or muons) and two or three jets, one of which is identified as containing a b-hadron, are selected. The main backgrounds are from t (t) over barZ and diboson production. Neural networks are used to improve the background rejection and extract the signal. The measured cross-section for tl(+)l(-) q production, including non-resonant dilepton pairs with m(l+l-) &gt; 30 GeV, is 97 +/- 13 (stat.) +/- 7 (syst.) fb, consistent with the Standard Model prediction.

Název v anglickém jazyce

Observation of the associated production of a top quark and a Z boson in pp collisions at root s=13 TeV with the ATLAS detector

Popis výsledku anglicky

Single top-quark production in association with a Z boson, where the Z boson decays to a pair of charged leptons, is measured in the trilepton channel. The proton-proton collision data collected by the ATLAS experiment from 2015 to 2018 at a centre-of-mass energy of 13 TeV are used, corresponding to an integrated luminosity of 139 fb(-1). Events containing three isolated charged leptons (electrons or muons) and two or three jets, one of which is identified as containing a b-hadron, are selected. The main backgrounds are from t (t) over barZ and diboson production. Neural networks are used to improve the background rejection and extract the signal. The measured cross-section for tl(+)l(-) q production, including non-resonant dilepton pairs with m(l+l-) &gt; 30 GeV, is 97 +/- 13 (stat.) +/- 7 (syst.) fb, consistent with the Standard Model prediction.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

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

Návaznosti

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

Rok uplatnění

2020

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

2020

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

46

Strana od-do

"124-1"-"124-46"

Kód UT WoS článku

000565307900001

EID výsledku v databázi Scopus

2-s2.0-85088394905