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Jet energy scale determination in the DO experiment
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2014 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, Vol. 763, 442-475 p.Article in journal (Refereed) Published
Abstract [en]

The calibration of jet energy measured in the DO detector is presented, based on p (p) over bar collisions at a center-of-mass energy of 1.96 TeV at the Fermilab Tevatron collider, jet energies are measured using a sampling calorimeter composed of uranium and liquid argon as the passive and active media, respectively. This paper describes the energy calibration of jets performed with gamma+jet, Z+jet and dilet events, with jet transverse momentum p(T) > 6 GeV and pseudorapidity range vertical bar eta vertical bar < 3.6, The corrections are measured separately for data and simulation, achieving a precision of 1.4-1.8% for jets in the central part of the calorimeter ancl up to 3.5% for the jets with pseudorapidity vertical bar eta vertical bar = 3.0. Specific corrections are extracted to enhance the description of jet energy in simulation and in particular of the effects due to the flavor of the parton originating the jet, correcting biases up to 3-4% in jets with low PT originating from gluons and up to 6-8% in jets from b quarks. Published by Elsevier B.V.

Place, publisher, year, edition, pages
2014. Vol. 763, 442-475 p.
Keyword [en]
Fermilab, DZero, DO, Tevatron Run II, Jet energy scale, Jet energy calibration
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-235612DOI: 10.1016/j.nima.2014.05.044ISI: 000341986200060OAI: oai:DiVA.org:uu-235612DiVA: diva2:762679
Available from: 2014-11-12 Created: 2014-11-06 Last updated: 2017-12-05Bibliographically approved

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High Energy Physics
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Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Physical Sciences

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