TY - JOUR
T1 - Jet reconstruction and performance using particle flow with the ATLAS Detector
AU - Bethani, Agni
AU - Connelly, Steven
AU - Bielski, Rafal
AU - Cox, Brian
AU - Da Via, Cinzia
AU - Dann, Nicholas
AU - Forcolin, Giulio
AU - Forti, Alessandra
AU - Iturbe Ponce, Julia
AU - Loebinger, Frederick
AU - Marsden, Stephen
AU - Masik, Jiri
AU - Menary, Stephen
AU - Munoz Sanchez, Francisca
AU - Oh, Alexander
AU - Ospanov, Rustem
AU - Peters, Yvonne
AU - Pilkington, Andrew
AU - Pin, Arnaud
AU - Price, Darren
AU - Raine, John
AU - Rawling, Jacob
AU - Roberts, Rhys
AU - Schweiger, H.
AU - Shaw, Savanna
AU - Tomlinson, Lee
AU - Watts, Stephen
AU - Wilk, Fabian
AU - Woudstra, Martin
AU - Wyatt, Terence
AU - ATLAS Collaboration
PY - 2017/7/13
Y1 - 2017/7/13
N2 - This paper describes the implementation and performance of a particle flow algorithm applied to 20.2 fb −1−1 of ATLAS data from 8 TeV proton–proton collisions in Run 1 of the LHC. The algorithm removes calorimeter energy deposits due to charged hadrons from consideration during jet reconstruction, instead using measurements of their momenta from the inner tracker. This improves the accuracy of the charged-hadron measurement, while retaining the calorimeter measurements of neutral-particle energies. The paper places emphasis on how this is achieved, while minimising double-counting of charged-hadron signals between the inner tracker and calorimeter. The performance of particle flow jets, formed from the ensemble of signals from the calorimeter and the inner tracker, is compared to that of jets reconstructed from calorimeter energy deposits alone, demonstrating improvements in resolution and pile-up stability
AB - This paper describes the implementation and performance of a particle flow algorithm applied to 20.2 fb −1−1 of ATLAS data from 8 TeV proton–proton collisions in Run 1 of the LHC. The algorithm removes calorimeter energy deposits due to charged hadrons from consideration during jet reconstruction, instead using measurements of their momenta from the inner tracker. This improves the accuracy of the charged-hadron measurement, while retaining the calorimeter measurements of neutral-particle energies. The paper places emphasis on how this is achieved, while minimising double-counting of charged-hadron signals between the inner tracker and calorimeter. The performance of particle flow jets, formed from the ensemble of signals from the calorimeter and the inner tracker, is compared to that of jets reconstructed from calorimeter energy deposits alone, demonstrating improvements in resolution and pile-up stability
U2 - 10.1140/epjc/s10052-017-5031-2
DO - 10.1140/epjc/s10052-017-5031-2
M3 - Article
SN - 1434-6044
VL - 77
JO - European Physical Journal C. Particles and Fields
JF - European Physical Journal C. Particles and Fields
ER -