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Electron identification with the ATLAS detector

Electron identification is a crucial input to many ATLAS physics analysis. The electron identification used in ATLAS for run 2 is based on a likelihood discrimination to separate isolated electron candidates from candidates originating from photon conversions, hadron misidentification and heavy flav...

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Detalles Bibliográficos
Autor principal: Tarna, Grigore
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.314.0769
http://cds.cern.ch/record/2286383
Descripción
Sumario:Electron identification is a crucial input to many ATLAS physics analysis. The electron identification used in ATLAS for run 2 is based on a likelihood discrimination to separate isolated electron candidates from candidates originating from photon conversions, hadron misidentification and heavy flavor decays. In addition, isolation variables are used as further handles to separate signal and background. The measurement of the efficiencies of the electron identification and isolation cuts are performed with the data using tag and probe techniques with large statistics sample of $Z\rightarrow ee$ and $J/\psi \rightarrow ee$ decays. These measurements performed with pp collisions data at $\sqrt{s}=13$ TeV in 2016 (2015) corresponding to an integrated luminosity of 33.9 (3.2) fb$^{-1}$ of $\sqrt{s}=13$ TeV pp are presented.