Changes between Version 10 and Version 11 of Korea2017-02-CMS-EXO-16-012


Ignore:
Timestamp:
Aug 16, 2017, 2:26:24 PM (7 years ago)
Author:
Chalons
Comment:

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  • Korea2017-02-CMS-EXO-16-012

    v10 v11  
    2929Diphoton triggers with asymmetric transverse energy thresholds (30/18 GeV) are used to select events with the diphoton invariant mass above 95 GeV. The trigger selection uses a very loose photon identification based on the cluster shower shape and loose isolation requirements and a requirement that the ratio of hadronic-to-electromagnetic energy (H/E) of the photon candidates is less than 0.1.
    3030
    31 PS: This part cannot usually be described by the fast-simulation of detector.
    3231
    3332=== 3.2 Object definition ===
     33
     34A global event reconstruction is performed using the particle-flow (PF) algorithm.
     35
     36* Jets: Jets are reconstructed from the PF candidates using the anti-kT clustering algorithm  with distance parameters of 0.4 (AK4 jet) and 0.8 (AK8 jet), as implemented in the FASTJET package. A pruning algorithm is applied to AK8 jets.
    3437
    3538* Photons: Two categories (the barrel–endcap transition region of 1.44 < |eta| < 1.57, where photon reconstruction is not optimal is excluded)
    3639      * Photons with |eta|  < 1.44
    3740      * Photons with 1.566  < |eta| < 2.5 
     41 Photon reconstruction and identification seems very involved (using BDTs).
    3842
     43* Electrons: The reconstructed electrons must lie within |eta| < 2.5
     44
     45* Muons: Muons candidates are required to be within the region |eta| < 2.4
     46
     47* Taus: Tau lepton candidates are required to have |eta| < 2.3
    3948=== 3.3 Cut-flow chart ===
    4049