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Search for trilepton resonances from chargino and neutralino pair production in $\sqrt{s}$ = 13 TeV $pp$ collisions with the ATLAS detector

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  • Additional Information
    • Contributors:
      Centre de Physique des Particules de Marseille (CPPM); Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS); Laboratoire d'Annecy de Physique des Particules (LAPP); Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS); Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab); Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS); Laboratoire de Physique de Clermont (LPC); Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA); Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay; Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)); Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); Laboratoire de Physique Subatomique et de Cosmologie (LPSC); Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ); Université Grenoble Alpes (UGA); Centre de Calcul de l'IN2P3 (CC-IN2P3); Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS); ATLAS
    • Publication Information:
      HAL CCSD
    • Publication Date:
      2021
    • Abstract:
      International audience ; A search is performed for the electroweak pair production of charginos and associated production of a chargino and neutralino, each of which decays through an $R$-parity-violating coupling into a lepton and a $W$, $Z$, or Higgs boson. The trilepton invariant-mass spectrum is constructed from events with three or more leptons, targeting chargino decays that include an electron or muon and a leptonically decaying $Z$ boson. The analyzed dataset corresponds to an integrated luminosity of 139 fb$^{-1}$ of proton-proton collision data produced by the Large Hadron Collider at a center-of-mass energy of $\sqrt{s}$ = 13 TeV and collected by the ATLAS experiment between 2015 and 2018. The data are found to be consistent with predictions from the Standard Model. The results are interpreted as limits at 95% confidence level on model-independent cross sections for processes beyond the Standard Model. Limits are also set on the production of charginos and neutralinos for a Minimal Supersymmetric Standard Model with an approximate $B$-$L$ symmetry. Charginos and neutralinos with masses between 100 GeV and 1100 GeV are excluded depending on the assumed decay branching fractions into a lepton (electron, muon, or $\tau$-lepton) plus a boson ($W$, $Z$, or Higgs).
    • Relation:
      info:eu-repo/semantics/altIdentifier/arxiv/2011.10543; hal-03047618; https://hal.science/hal-03047618; https://hal.science/hal-03047618/document; https://hal.science/hal-03047618/file/2011.10543.pdf; ARXIV: 2011.10543; INSPIRE: 1831992
    • Accession Number:
      10.1103/PhysRevD.103.112003
    • Online Access:
      https://doi.org/10.1103/PhysRevD.103.112003
      https://hal.science/hal-03047618
      https://hal.science/hal-03047618/document
      https://hal.science/hal-03047618/file/2011.10543.pdf
    • Rights:
      info:eu-repo/semantics/OpenAccess
    • Accession Number:
      edsbas.6CDDF15C