Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC

Aad, G. and Abbott, B. and Abdallah, J. and Abdelalim, A. A. and Abdesselam, A. and Abdinov, O. and Abi, B. and Abolins, M. and AbouZeid, S. and Abramowicz, H. and Abreu, H. and Acerbi, E. and Acharya, B. S. and Adamczyk, L. and Adams, D. L. and Addy, T. N. and Adelman, J. and Aderholz, M. and Adomeit, S. and Adragna, P. and Adye, T. and Aefsky, S. and Aguilar-Saavedra, J. A. and Aharrouche, M. and Ahlen, S. P. and Ahles, F. and Ahmad, A. and Ahsan, M. and Aielli, G. and Akdogan, T. and Krasznahorkay, Attila and Pásztor, Gabriella and Tóth, József (2013) Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC. EUROPEAN PHYSICAL JOURNAL C, 73 (3). ISSN 1434-6044

Preview

Text 1203.1302v1.pdf Available under License Creative Commons Attribution. Download (733kB) | Preview

Abstract

The uncertainty on the calorimeter energy response to jets of particles is derived for the ATLAS experiment at the Large Hadron Collider (LHC). First, the calorimeter response to single isolated charged hadrons is measured and compared to the Monte Carlo simulation using proton-proton col- lisions at centre-of-mass energies of √s = 900 GeV and 7 TeV collected during 2009 and 2010. Then, using the decay of Ks and Λ particles, the calorimeter response to specific types of particles (positively and negatively charged pions, protons, and anti-protons) is measured and compared to the Monte Carlo predictions. Finally, the jet energy scale uncertainty is determined by propagating the response uncertainty for single charged and neutral particles to jets. The response uncertainty is 2–5% for central isolated hadrons and 1–3% for the final calorimeter jet energy scale.

Actions (login required)

Edit Item