Search for doubly charged Higgs boson production in multi-lepton final states using 139 fb-1 of proton-proton 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%3A10476576" target="_blank" >RIV/00216208:11320/23:10476576 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=9b2lcY3Tew" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=9b2lcY3Tew</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-023-11578-9" target="_blank" >10.1140/epjc/s10052-023-11578-9</a>

Result language

angličtina

Original language name

Search for doubly charged Higgs boson production in multi-lepton final states using 139 fb-1 of proton-proton collisions at SQUARE ROOTs = 13 TeV with the ATLAS detector

Original language description

A search for pair production of doubly chargedHiggs bosons (H+-+-), each decaying into a pair of prompt,isolated, and highly energetic leptons with the same electriccharge, is presented. The search uses a proton-proton collisiondata sample at a centre-of-mass energy of 13 TeV correspondingto an integrated luminosity of 139 fb-1 recordedby the ATLAS detector during Run 2 of the Large HadronCollider (LHC). This analysis focuses on same-charge leptonicdecays, H+-+- RIGHTWARDS ARROW+-+- where , = e,μ, τ, intwo-, three-, and four-lepton channels, but only considersfinal states which include electrons or muons. No evidenceof a signal is observed. Corresponding upper limits on theproduction cross-section of a doubly charged Higgs bosonare derived, as a function of its mass m(H+-+-), at 95% confidencelevel. Assuming that the branching ratios to each of thepossible leptonic final states are equal, B(H+-+- RIGHTWARDS ARROW e+-e+-) =B(H+-+- RIGHTWARDS ARROW e+-μ+-) = B(H+-+- RIGHTWARDS ARROW μ+-μ+-) = B(H+-+- RIGHTWARDS ARROWe+-τ+-) = B(H+-+- RIGHTWARDS ARROW μ+-τ+-) = B(H+-+- RIGHTWARDS ARROW τ+-τ+-) = 1/6,the observed (expected) lower limit on the mass of a doublycharged Higgs boson is 1080GeV(1065 GeV) within the leftrightsymmetric type-II seesaw model, which is the strongestlimit to date produced by the ATLAS Collaboration. Additionally,this paper provides the first direct test of the Zee-Babu neutrino mass model at the LHC, yielding an observed(expected) lower limit of m(H+-+-) = 900 GeV (880 GeV).

Czech name

—

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

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Volume of the periodical

83

Issue of the periodical within the volume

Neuveden

Country of publishing house

DE - GERMANY

Number of pages

32

Pages from-to

605

UT code for WoS article

001062376700002

EID of the result in the Scopus database

2-s2.0-85167956764