INVESTIGADORES
MONTICELLI Fernando Gabriel
artículos
Título:
Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC
Autor/es:
ATLAS COLLABORATION, G. AAD, F. MONTICELLI, ET AL
Revista:
EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2012 vol. 213 p. 1 - 23
ISSN:
1434-6044
Resumen:
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
sqrt(s) = 900 GeV and 7 TeV collected during 2009 and 2010. Then, using
the decay of K_s and Lambda 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.