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

Result code in 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>

Alternative codes found

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

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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%.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

<a href="/en/project/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Fundamental constituents of matter through frontier technologies</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Volume of the periodical

2024

Issue of the periodical within the volume

5

Country of publishing house

IT - ITALY

Number of pages

57

Pages from-to

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UT code for WoS article

001270338400001

EID of the result in the Scopus database

2-s2.0-85197477787