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Search in diphoton and dielectron final states for displaced production of Higgs or Z bosons with the ATLAS detector in p s=13 TeV pp collisions

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F23%3A73621839" target="_blank" >RIV/61989592:15310/23:73621839 - isvavai.cz</a>

  • Alternative codes found

    RIV/68407700:21220/23:00372888 RIV/68407700:21340/23:00372888 RIV/68407700:21670/23:00372888

  • Result on the web

    <a href="http://.https://journals.aps.org/prd/pdf/10.1103/PhysRevD.108.012012" target="_blank" >http://.https://journals.aps.org/prd/pdf/10.1103/PhysRevD.108.012012</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1103/PhysRevD.108.012012" target="_blank" >10.1103/PhysRevD.108.012012</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Search in diphoton and dielectron final states for displaced production of Higgs or Z bosons with the ATLAS detector in p s=13 TeV pp collisions

  • Original language description

    A search is presented for displaced production of Higgs bosons or Z bosons, originating from the decay of a neutral long-lived particle (LLP) and reconstructed in the decay modes H -&amp; gamma;&amp; gamma; and Z -ee. The analysis uses the full Run 2 dataset of proton-proton collisions delivered by the LHC at an energy of p1/4 13 TeV between 2015 and 2018 and recorded by the ATLAS detector, corresponding to an ffiffi s integrated luminosity of 139 fb-1. Exploiting the capabilities of the ATLAS liquid argon calorimeter to precisely measure the arrival times and trajectories of electromagnetic objects, the analysis searches for the signature of pairs of photons or electrons which arise from a common displaced vertex and which arrive after some delay at the calorimeter. The results are interpreted in a gauge-mediated supersymmetry breaking model with pair-produced Higgsinos that decay to LLPs, and each LLP subsequently decays into either a Higgs boson or a Z boson. The final state includes at least two particles that escape direct detection, giving rise to missing transverse momentum. No significant excess is observed above the background expectation. The results are used to set upper limits on the cross section for Higgsino pair production, up to a &amp; chi;&amp; SIM;01 mass of 369 (704) GeV for decays with 100% branching ratio of &amp; chi; &amp; SIM;01 to Higgs (Z) bosons for a &amp; chi;&amp; SIM;01 lifetime of 2 ns. A model-independent limit is also set on the production of pairs of photons or electrons with a significant delay in arrival at the calorimeter.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10303 - Particles and field physics

Result continuities

  • Project

    <a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2023

  • 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

    108

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    32

  • Pages from-to

    "012012-1"-"012012-32"

  • UT code for WoS article

    001058590400001

  • EID of the result in the Scopus database

    2-s2.0-85170236934