Search for a light charged Higgs boson in t -> H+-b decays, with H+- -> cb, in the lepton+jets final state in proton-proton collisions at CMS = 13 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476331" target="_blank" >RIV/00216208:11320/23:10476331 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=1HH1ki1de1" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=1HH1ki1de1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP09(2023)004" target="_blank" >10.1007/JHEP09(2023)004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for a light charged Higgs boson in t -> H+-b decays, with H+- -> cb, in the lepton+jets final state in proton-proton collisions at CMS = 13 TeV with the ATLAS detector

Popis výsledku v původním jazyce

A search for a charged Higgs boson, H+-, produced in top-quark decays, t !H+-b, is presented. The search targets H+- decays into a bottom and a charm quark,H+- ! cb. The analysis focuses on a selection enriched in top-quark pair production, whereone top quark decays into a leptonically decaying W boson and a bottom quark, and theother top quark decays into a charged Higgs boson and a bottom quark. This topologyleads to a lepton-plus-jets final state, characterised by an isolated electron or muon and atleast four jets. The search exploits the high multiplicity of jets containing b-hadrons, anddeploys a neural network classifier that uses the kinematic differences between the signaland the background. The search uses a dataset of proton-proton collisions collected ata centre-of-mass energy ps = 13TeV between 2015 and 2018 with the ATLAS detectorat CERN&apos;s Large Hadron Collider, amounting to an integrated luminosity of 139 fb-1.Observed (expected) 95% confidence-level upper limits between 0.15% (0.09%) and 0.42%(0.25%) are derived for the product of branching fractions B(t ! H+-b) x B(H+- ! cb)for charged Higgs boson masses between 60 and 160 GeV, assuming the SM production of the top-quark pairs.

Název v anglickém jazyce

Search for a light charged Higgs boson in t -> H+-b decays, with H+- -> cb, in the lepton+jets final state in proton-proton collisions at CMS = 13 TeV with the ATLAS detector

Popis výsledku anglicky

A search for a charged Higgs boson, H+-, produced in top-quark decays, t !H+-b, is presented. The search targets H+- decays into a bottom and a charm quark,H+- ! cb. The analysis focuses on a selection enriched in top-quark pair production, whereone top quark decays into a leptonically decaying W boson and a bottom quark, and theother top quark decays into a charged Higgs boson and a bottom quark. This topologyleads to a lepton-plus-jets final state, characterised by an isolated electron or muon and atleast four jets. The search exploits the high multiplicity of jets containing b-hadrons, anddeploys a neural network classifier that uses the kinematic differences between the signaland the background. The search uses a dataset of proton-proton collisions collected ata centre-of-mass energy ps = 13TeV between 2015 and 2018 with the ATLAS detectorat CERN&apos;s Large Hadron Collider, amounting to an integrated luminosity of 139 fb-1.Observed (expected) 95% confidence-level upper limits between 0.15% (0.09%) and 0.42%(0.25%) are derived for the product of branching fractions B(t ! H+-b) x B(H+- ! cb)for charged Higgs boson masses between 60 and 160 GeV, assuming the SM production of the top-quark pairs.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10300 - Physical sciences

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

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

2023

Číslo periodika v rámci svazku

09

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

52

Strana od-do

004

Kód UT WoS článku

001062397100001

EID výsledku v databázi Scopus

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