# Quark Matter 2017

5-11 February 2017
Hyatt Regency Chicago
America/Chicago timezone

## Jet Energy Scale and its Uncertainties Using the Heavy Ion Jet Reconstruction Algorithm in p+p Collisions at ATLAS

Not scheduled
2h 30m
Hyatt Regency Chicago

#### Hyatt Regency Chicago

151 East Wacker Drive Chicago, Illinois, USA, 60601
Board: F14
Poster

### Speaker

Akshat Puri (Univ. Illinois at Urbana-Champaign (US))

### Description

ATLAS uses a jet reconstruction algorithm in heavy ion collisions that takes as input calorimeter towers of size 0.1x0.1 in $\Delta\eta$ x $\Delta\phi$ and iteratively determines the underlying event background. This algorithm, which is different from the standard jet reconstruction used in ATLAS, is also used in the proton-proton collisions used as reference data for the Pb+Pb and p+Pb. This poster provides details of the heavy ion jet reconstruction algorithm and its performance in p+p collisions. The calibration procedure is described in detail and cross checks using photon-jet balance are shown. The uncertainties on the jet energy scale and the jet energy resolution are described.

Preferred Track Jets and High pT Hadrons ATLAS

### Primary author

Akshat Puri (Univ. Illinois at Urbana-Champaign (US))