ATLAS b-jet identification performance and efficiency measurement with tt¯ events in pp collisions at √s=13 TeV
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73597506" target="_blank" >RIV/61989592:15310/19:73597506 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68378271:_____/19:00520900
Výsledek na webu
<a href="https://link.springer.com/content/pdf/10.1140/epjc/s10052-019-7450-8.pdf" target="_blank" >https://link.springer.com/content/pdf/10.1140/epjc/s10052-019-7450-8.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-019-7450-8" target="_blank" >10.1140/epjc/s10052-019-7450-8</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
ATLAS b-jet identification performance and efficiency measurement with tt¯ events in pp collisions at √s=13 TeV
Popis výsledku v původním jazyce
The algorithms used by the ATLAS Collaboration during Run 2 of the Large Hadron Collider to identify jets containing b-hadrons are presented. The performance of the algorithms is evaluated in the simulation and the efficiency with which these algorithms identify jets containing b-hadrons is measured in collision data. The measurement uses a likelihood-based method in a sample highly enriched in tt¯ events. The topology of the t→ Wb decays is exploited to simultaneously measure both the jet flavour composition of the sample and the efficiency in a transverse momentum range from 20 to 600 GeV. The efficiency measurement is subsequently compared with that predicted by the simulation. The data used in this measurement, corresponding to a total integrated luminosity of 80.5 fb - 1, were collected in proton–proton collisions during the years 2015–2017 at a centre-of-mass energy s= 13 TeV. By simultaneously extracting both the efficiency and jet flavour composition, this measurement significantly improves the precision compared to previous results, with uncertainties ranging from 1 to 8% depending on the jet transverse momentum. © 2019, CERN for the benefit of the ATLAS collaboration.
Název v anglickém jazyce
ATLAS b-jet identification performance and efficiency measurement with tt¯ events in pp collisions at √s=13 TeV
Popis výsledku anglicky
The algorithms used by the ATLAS Collaboration during Run 2 of the Large Hadron Collider to identify jets containing b-hadrons are presented. The performance of the algorithms is evaluated in the simulation and the efficiency with which these algorithms identify jets containing b-hadrons is measured in collision data. The measurement uses a likelihood-based method in a sample highly enriched in tt¯ events. The topology of the t→ Wb decays is exploited to simultaneously measure both the jet flavour composition of the sample and the efficiency in a transverse momentum range from 20 to 600 GeV. The efficiency measurement is subsequently compared with that predicted by the simulation. The data used in this measurement, corresponding to a total integrated luminosity of 80.5 fb - 1, were collected in proton–proton collisions during the years 2015–2017 at a centre-of-mass energy s= 13 TeV. By simultaneously extracting both the efficiency and jet flavour composition, this measurement significantly improves the precision compared to previous results, with uncertainties ranging from 1 to 8% depending on the jet transverse momentum. © 2019, CERN for the benefit of the ATLAS collaboration.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10303 - Particles and field physics
Návaznosti výsledku
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)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
EUROPEAN PHYSICAL JOURNAL C
ISSN
1434-6044
e-ISSN
—
Svazek periodika
79
Číslo periodika v rámci svazku
11
Stát vydavatele periodika
DE - Spolková republika Německo
Počet stran výsledku
36
Strana od-do
"970-1"-"970-36"
Kód UT WoS článku
000505550300004
EID výsledku v databázi Scopus
2-s2.0-85075996723