Measurements of inclusive and differential cross-sections of combined tt<mml:mo stretchy="true"><overbar></mml:mover>gamma and <it>tW gamma</it> production in the <it>e mu</it> channel at 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%3A73602314" target="_blank" >RIV/61989592:15310/20:73602314 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007%2FJHEP09%282020%29049" target="_blank" >https://link.springer.com/article/10.1007%2FJHEP09%282020%29049</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP09(2020)049" target="_blank" >10.1007/JHEP09(2020)049</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurements of inclusive and differential cross-sections of combined tt<mml:mo stretchy="true"><overbar></mml:mover>gamma and <it>tW gamma</it> production in the <it>e mu</it> channel at 13 TeV with the ATLAS detector

Popis výsledku v původním jazyce

Inclusive and differential cross-sections for the production of top quarks in association with a photon are measured with proton-proton collision data corresponding to an integrated luminosity of 139 fb(-1). The data were collected by the ATLAS detector at the LHC during Run 2 between 2015 and 2018 at a centre-of-mass energy of 13 TeV. The measurements are performed in a fiducial volume defined at parton level. Events with exactly one photon, one electron and one muon of opposite sign, and at least two jets, of which at least one is b-tagged, are selected. The fiducial cross-section is measured to be 39.6-2.3+2.7 fb. Differential cross-sections as functions of several observables are compared with state-of-the-art Monte Carlo simulations and next-to-leading-order theoretical calculations. These include cross-sections as functions of photon kinematic variables, angular variables related to the photon and the leptons, and angular separations between the two leptons in the event. All measurements are in agreement with the predictions from the Standard Model.

Název v anglickém jazyce

Measurements of inclusive and differential cross-sections of combined tt<mml:mo stretchy="true"><overbar></mml:mover>gamma and <it>tW gamma</it> production in the <it>e mu</it> channel at 13 TeV with the ATLAS detector

Popis výsledku anglicky

Inclusive and differential cross-sections for the production of top quarks in association with a photon are measured with proton-proton collision data corresponding to an integrated luminosity of 139 fb(-1). The data were collected by the ATLAS detector at the LHC during Run 2 between 2015 and 2018 at a centre-of-mass energy of 13 TeV. The measurements are performed in a fiducial volume defined at parton level. Events with exactly one photon, one electron and one muon of opposite sign, and at least two jets, of which at least one is b-tagged, are selected. The fiducial cross-section is measured to be 39.6-2.3+2.7 fb. Differential cross-sections as functions of several observables are compared with state-of-the-art Monte Carlo simulations and next-to-leading-order theoretical calculations. These include cross-sections as functions of photon kinematic variables, angular variables related to the photon and the leptons, and angular separations between the two leptons in the event. All measurements are in agreement with the predictions from the Standard Model.

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

9

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

48

Strana od-do

"049-1"-"049-48"

Kód UT WoS článku

000570902100005

EID výsledku v databázi Scopus

2-s2.0-85090330843