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

Vivarelli, I, De Santo, A, Salvatore, F, Cerri, A, De Sanctis, U, Suruliz, K, Chavez Barajas, C, Sutton, M, Potter, T, Unset and ATLAS Collaboration, et al. (2013) Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC. European Physical Journal C: Particles and Fields, 73 (2305). ISSN 1434-6044

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Abstract

The uncertainty on the calorimeter energy re- sponse to jets of particles is derived for the ATLAS ex- periment at the Large Hadron Collider (LHC). First, the calorimeter response to single isolated charged hadrons is measured and compared to the Monte Carlo simulation us- ing proton-proton collisions 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 nega- tively 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 par- ticles to jets. The response uncertainty is 2–5 % for central isolated hadrons and 1–3 % for the final calorimeter jet en- ergy scale.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0770 Nuclear and particle physics. Atomic energy. Radioactivity > QC0793 Elementary particle physics
Depositing User: Iacopo Vivarelli
Date Deposited: 17 Jul 2014 13:04
Last Modified: 07 Mar 2017 11:36
URI: http://sro.sussex.ac.uk/id/eprint/49325

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