Search for new particles in final states with a boosted top quark and missing transverse momentum in proton-proton 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%2F68407700%3A21220%2F24%3A00380275" target="_blank" >RIV/68407700:21220/24:00380275 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21240/24:00380275 RIV/68407700:21340/24:00380275 RIV/68407700:21670/24:00380275

Výsledek na webu

<a href="https://doi.org/10.1007/JHEP05(2024)263" target="_blank" >https://doi.org/10.1007/JHEP05(2024)263</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP05(2024)263" target="_blank" >10.1007/JHEP05(2024)263</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for new particles in final states with a boosted top quark and missing transverse momentum in proton-proton collisions at root s=13 TeV with the ATLAS detector

Popis výsledku v původním jazyce

A search for events with one top quark and missing transverse momentum in the final state is presented. The fully hadronic decay of the top quark is explored by selecting events with a reconstructed boosted top-quark topology produced in association with large missing transverse momentum. The analysis uses 139 fb(-1) of proton-proton collision data at a centre-of-mass energy of root s = 13TeV recorded during 2015-2018 by the ATLAS detector at the Large Hadron Collider. The results are interpreted in the context of simplified models for Dark Matter particle production and the single production of a vector-like T quark. Without significant excess relative to the Standard Model expectations, 95% confidence-level upper limits on the corresponding cross-sections are obtained. The production of Dark Matter particles in association with a single top quark is excluded for masses of a scalar (vector) mediator up to 4.3 (2.3) TeV, assuming m(chi) = 1 GeV and the model couplings lambda(q) = 0.6 and lambda(chi)= 0.4 ( a = 0.5 and g(chi) = 1). The production of a single vector-like T quark is excluded for masses below 1.8TeV assuming a coupling to the top quark kappa(T) = 0.5 and a branching ratio for T -> Zt of 25%.

Název v anglickém jazyce

Search for new particles in final states with a boosted top quark and missing transverse momentum in proton-proton collisions at root s=13 TeV with the ATLAS detector

Popis výsledku anglicky

A search for events with one top quark and missing transverse momentum in the final state is presented. The fully hadronic decay of the top quark is explored by selecting events with a reconstructed boosted top-quark topology produced in association with large missing transverse momentum. The analysis uses 139 fb(-1) of proton-proton collision data at a centre-of-mass energy of root s = 13TeV recorded during 2015-2018 by the ATLAS detector at the Large Hadron Collider. The results are interpreted in the context of simplified models for Dark Matter particle production and the single production of a vector-like T quark. Without significant excess relative to the Standard Model expectations, 95% confidence-level upper limits on the corresponding cross-sections are obtained. The production of Dark Matter particles in association with a single top quark is excluded for masses of a scalar (vector) mediator up to 4.3 (2.3) TeV, assuming m(chi) = 1 GeV and the model couplings lambda(q) = 0.6 and lambda(chi)= 0.4 ( a = 0.5 and g(chi) = 1). The production of a single vector-like T quark is excluded for masses below 1.8TeV assuming a coupling to the top quark kappa(T) = 0.5 and a branching ratio for T -> Zt of 25%.

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

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

Rok uplatnění

2024

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

1029-8479

Svazek periodika

2024

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

57

Strana od-do

—

Kód UT WoS článku

001270338400001

EID výsledku v databázi Scopus

2-s2.0-85197477787