1 Ocak 2022 Dergi makalesi Açık Erişim

CERN İşbirliği

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{
  "@context": "https://schema.org/", 
  "@id": 262625, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "CERN", 
      "name": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "datePublished": "2022-01-01", 
  "description": "<p>A search for long-lived charginos produced either directly or in the cascade decay of heavy prompt gluino states is presented. The search is based on proton\u2013proton collision data collected at a centre-of-mass energy of     $\\sqrt{s}$   = 13 T    $\\text{eV}$   between 2015 and 2018 with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 136 fb    ${}^{-1}$  . Long-lived charginos are characterised by a distinct signature of a short and then disappearing track, and are reconstructed using at least four measurements in the ATLAS pixel detector, with no subsequent measurements in the silicon-microstrip tracking volume nor any associated energy deposits in the calorimeter. The final state is complemented by a large missing transverse-momentum requirement for triggering purposes and at least one high-transverse-momentum jet. No excess above the expected backgrounds is observed. Exclusion limits are set at 95% confidence level on the masses of the chargino and gluino for different chargino lifetimes. Chargino masses up to 660 (210) G    $\\text{eV}$   are excluded in scenarios where the chargino is a pure wino (higgsino). For charginos produced during the cascade decay of a heavy gluino, gluinos with masses below 2.1 T    $\\text{eV}$   are excluded for a chargino mass of 300 G    $\\text{eV}$   and a lifetime of 0.2 ns.</p>", 
  "headline": "Search for long-lived charginos based on a disappearing-track signature using 136 fb    ${}^{-1}$   of pp collisions at     $\\sqrt{s}$   = 13 TeV with the ATLAS detector", 
  "identifier": 262625, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Search for long-lived charginos based on a disappearing-track signature using 136 fb    ${}^{-1}$   of pp collisions at     $\\sqrt{s}$   = 13 TeV with the ATLAS detector", 
  "url": "https://aperta.ulakbim.gov.tr/record/262625"
}