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

The ATLAS Collaboration

Research output: Contribution to journalArticle

48 Citations (Scopus)

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 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 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.

Original languageEnglish
Article number2305
JournalEuropean Physical Journal C
Volume73
Issue number3
DOIs
Publication statusPublished - Mar 2 2013

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Colliding beam accelerators
Calorimeters
calorimeters
Protons
Hadrons
Detectors
detectors
protons
hadrons
energy
neutral particles
center of mass
charged particles
pions
Uncertainty
collisions
decay
predictions
Experiments
simulation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Engineering (miscellaneous)

Cite this

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

In: European Physical Journal C, Vol. 73, No. 3, 2305, 02.03.2013.

Research output: Contribution to journalArticle

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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 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 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.",
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