Search for direct production of electroweakinos in final states with one lepton, jets and missing transverse momentum in pp collisions at SQUARE ROOTs = 13 TeV with the ATLAS detector

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10495147" target="_blank" >RIV/00216208:11320/23:10495147 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=4qzBwobBIH" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=4qzBwobBIH</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP12(2023)167" target="_blank" >10.1007/JHEP12(2023)167</a>

Result language

angličtina

Original language name

Search for direct production of electroweakinos in final states with one lepton, jets and missing transverse momentum in pp collisions at SQUARE ROOTs = 13 TeV with the ATLAS detector

Original language description

Searches for electroweak production of wino-like chargino pairs, ~χ+1 ~χ-1 , and ofwino-like chargino and next-to-lightest neutralino, ~χ+-1 ~χ02, are presented. The models exploredassume that the charginos decay into a W boson and the lightest neutralino, ~χ+-1 RIGHTWARDS ARROW W+- ~χ01.The next-to-lightest neutralinos are degenerate in mass with the chargino and decay to ~χ01andeither a Z or a Higgs boson, ~χ02RIGHTWARDS ARROW Z ~χ01or h~χ01. The searches exploit the presence of a singleisolated lepton and missing transverse momentum from the W boson decay products and thelightest neutralinos, and the presence of jets from hadronically decaying Z or W bosons or fromthe Higgs boson decaying into a pair of b-quarks. The searches use 139 fb-1 of SQUARE ROOTs = 13TeVproton-proton collisions data collected by the ATLAS detector at the Large Hadron Colliderbetween 2015 and 2018. No deviations from the Standard Model expectations are found, and95% confidence level exclusion limits are set. Chargino masses ranging from 260 to 520 GeVare excluded for a massless ~χ01in chargino pair production models. Degenerate chargino andnext-to-lightest neutralino masses ranging from 260 to 420 GeV are excluded for a massless~χ01for ~χ02RIGHTWARDS ARROW Z ~χ01. For decays through an on-shell Higgs boson and for mass-splitting between~χ+-1 /~χ02and ~χ01as small as the Higgs boson mass, mass limits are improved by up to 40 GeVin the range of 200-260 GeV and 280-470 GeV compared to previous ATLAS constraints.

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

10300 - Physical sciences

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

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

—

Volume of the periodical

2023

Issue of the periodical within the volume

12

Country of publishing house

DE - GERMANY

Number of pages

63

Pages from-to

167

UT code for WoS article

001173323200001

EID of the result in the Scopus database

2-s2.0-85195880116