Search for heavy right-handed Majorana neutrinos in the decay of top quarks produced in proton-proton collisions at SQUARE ROOTs = 13 TeV with the ATLAS detector
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10494324" target="_blank" >RIV/00216208:11320/24:10494324 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=S6v2F-EHLf" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=S6v2F-EHLf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.110.112004" target="_blank" >10.1103/PhysRevD.110.112004</a>
Alternative languages
Result language
angličtina
Original language name
Search for heavy right-handed Majorana neutrinos in the decay of top quarks produced in proton-proton collisions at SQUARE ROOTs = 13 TeV with the ATLAS detector
Original language description
A search for heavy right-handed Majorana neutrinos is performed with the ATLAS detector at the CERN Large Hadron Collider, using the 140 fb-1 of proton-proton collision data at SQUARE ROOTs = 13 TeV collected during Run 2. This search targets t-t production, in which both top quarks decay into a bottom quark and a W boson, where one of the W bosons decays hadronically and the other decays into an electron or muon and a heavy neutral lepton. The heavy neutral lepton is identified through a decay into an electron or muon and another W boson, resulting in a pair of same-charge same-flavor leptons in the final state.This paper presents the first search for heavy neutral leptons in the mass range of 15-75 GeV using t-t events. No significant excess is observed over the background expectation, and upper limits are placed on the signal cross sections. Assuming a benchmark scenario of the phenomenological type-I seesaw model, these cross section limits are then translated into upper limits on the mixing parameters of the heavy Majorana neutrino with Standard Model neutrinos.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
2470-0010
e-ISSN
2470-0029
Volume of the periodical
110
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
33
Pages from-to
112004
UT code for WoS article
001381817100003
EID of the result in the Scopus database
2-s2.0-85213044235