1 Ocak 2022 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1140/epjc/s10052-022-10489-5", 
  "abstract": "<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>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "European Physical Journal C", 
  "id": "262625", 
  "issue": "7", 
  "issued": {
    "date-parts": [
      [
        2022, 
        1, 
        1
      ]
    ]
  }, 
  "title": "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", 
  "type": "article-journal", 
  "volume": "82"
}