Measurement of jet substructure in boosted t(t)over-bar events with the ATLAS detector using 140 fb-1 of 13 TeV pp collisions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73628089" target="_blank" >RIV/61989592:15310/24:73628089 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/24:00380882 RIV/68407700:21340/24:00380882 RIV/68407700:21670/24:00380882

Výsledek na webu

<a href="https://journals.aps.org/prd/pdf/10.1103/PhysRevD.109.112016" target="_blank" >https://journals.aps.org/prd/pdf/10.1103/PhysRevD.109.112016</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.109.112016" target="_blank" >10.1103/PhysRevD.109.112016</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of jet substructure in boosted t(t)over-bar events with the ATLAS detector using 140 fb-1 of 13 TeV pp collisions

Popis výsledku v původním jazyce

Measurements of the substructure of top- quark jets are presented, using 140 fb(-1) of 13 TeV pp collision data recorded with the ATLAS detector at the LHC. Top-quark jets reconstructed with the anti-kt algorithm with a radius parameter R 1/4 1.0 are selected in top-quark pair (t (t) over bar) events where one top quark decays semileptonically and the other hadronically, or where both top quarks decay hadronically. The top-quark jets are required to have transverse momentum pT &gt; 350 GeV, yielding large samples of data events with jet pT values between 350 and 600 GeV. One- and two-dimensional differential cross sections for eight substructure variables, defined using only the charged components of the jets, are measured in a particle-level phase space by correcting for the smearing and acceptance effects induced by the detector. The differential cross sections are compared with the predictions of several Monte Carlo simulations in which top- quark pair- production quantum chromodynamic matrix- element calculations at next-to-leading-order precision in the strong coupling constant aS are passed to leading-order parton shower and hadronization generators. The Monte Carlo predictions for measures of the broadness, and also the two-body structure, of the top-quark jets are found to be in good agreement with the measurements, while variables sensitive to the three-body structure of the top-quark jets exhibit some tension with the measured distributions.

Název v anglickém jazyce

Measurement of jet substructure in boosted t(t)over-bar events with the ATLAS detector using 140 fb-1 of 13 TeV pp collisions

Popis výsledku anglicky

Measurements of the substructure of top- quark jets are presented, using 140 fb(-1) of 13 TeV pp collision data recorded with the ATLAS detector at the LHC. Top-quark jets reconstructed with the anti-kt algorithm with a radius parameter R 1/4 1.0 are selected in top-quark pair (t (t) over bar) events where one top quark decays semileptonically and the other hadronically, or where both top quarks decay hadronically. The top-quark jets are required to have transverse momentum pT &gt; 350 GeV, yielding large samples of data events with jet pT values between 350 and 600 GeV. One- and two-dimensional differential cross sections for eight substructure variables, defined using only the charged components of the jets, are measured in a particle-level phase space by correcting for the smearing and acceptance effects induced by the detector. The differential cross sections are compared with the predictions of several Monte Carlo simulations in which top- quark pair- production quantum chromodynamic matrix- element calculations at next-to-leading-order precision in the strong coupling constant aS are passed to leading-order parton shower and hadronization generators. The Monte Carlo predictions for measures of the broadness, and also the two-body structure, of the top-quark jets are found to be in good agreement with the measurements, while variables sensitive to the three-body structure of the top-quark jets exhibit some tension with the measured distributions.

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/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Výzkum základních stavebních kamenů hmoty s využitím špičkových technologií</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

PHYSICAL REVIEW D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

109

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

49

Strana od-do

"112016-1"-"112016-49"

Kód UT WoS článku

001311261900001

EID výsledku v databázi Scopus

2-s2.0-85198392709