Jet energy measurement and its systematic uncertainty in proton-proton collisions at [Formula: see text] TeV with the ATLAS detector.

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Abstract
The jet energy scale (JES) and its systematic uncertainty are determined for jets measured with the ATLAS detector using proton-proton collision data with a centre-of-mass energy of [Formula: see text] TeV corresponding to an integrated luminosity of [Formula: see text][Formula: see text]. Jets are reconstructed from energy deposits forming topological clusters of calorimeter cells using the anti-[Formula: see text] algorithm with distance parameters [Formula: see text] or [Formula: see text], and are calibrated using MC simulations. A residual JES correction is applied to account for differences between data and MC simulations. This correction and its systematic uncertainty are estimated using a combination of in situ techniques exploiting the transverse momentum balance between a jet and a reference object such as a photon or a [Formula: see text] boson, for [Formula: see text] and pseudorapidities [Formula: see text]. The effect of multiple proton-proton interactions is corrected for, and an uncertainty is evaluated using in situ techniques. The smallest JES uncertainty of less than 1 % is found in the central calorimeter region ([Formula: see text]) for jets with [Formula: see text]. For central jets at lower [Formula: see text], the uncertainty is about 3 %. A consistent JES estimate is found using measurements of the calorimeter response of single hadrons in proton-proton collisions and test-beam data, which also provide the estimate for [Formula: see text] TeV. The calibration of forward jets is derived from dijet [Formula: see text] balance measurements. The resulting uncertainty reaches its largest value of 6 % for low-[Formula: see text] jets at [Formula: see text]. Additional JES uncertainties due to specific event topologies, such as close-by jets or selections of event samples with an enhanced content of jets originating from light quarks or gluons, are also discussed. The magnitude of these uncertainties depends on the event sample used in a given physics analysis, but typically amounts to 0.5-3 %.
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Authors G Aad, T Abajyan, B Abbott, J Abdallah, S Abdel Khalek, O Abdinov, R Aben, B Abi, M Abolins, O S AbouZeid, H Abramowicz, H Abreu, Y Abulaiti, B S Acharya, L Adamczyk, D L Adams, T N Addy, J Adelman, S Adomeit, T Adye, S Aefsky, T Agatonovic-Jovin, J A Aguilar-Saavedra, M Agustoni, S P Ahlen, A Ahmad, F Ahmadov, G Aielli, T P A Åkesson, G Akimoto, A V Akimov, M A Alam, J Albert, S Albrand, M J Alconada Verzini, M Aleksa, I N Aleksandrov, F Alessandria, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, M Aliev, G Alimonti, L Alio, J Alison, B M M Allbrooke, L J Allison, P P Allport, S E Allwood-Spiers, J Almond, A Aloisio, R Alon, A Alonso, F Alonso, A Altheimer, B Alvarez Gonzalez, M G Alviggi, K Amako, Y Amaral Coutinho, C Amelung, V V Ammosov, S P Amor Dos Santos, A Amorim, S Amoroso, N Amram, G Amundsen, C Anastopoulos, L S Ancu, N Andari, T Andeen, C F Anders, G Anders, K J Anderson, A Andreazza, V Andrei, X S Anduaga, S Angelidakis, P Anger, A Angerami, F Anghinolfi, A V Anisenkov, N Anjos, A Annovi, A Antonaki, M Antonelli, A Antonov, J Antos, F Anulli, M Aoki, L Aperio Bella, R Apolle, G Arabidze, I Aracena, Y Arai, A T H Arce, S Arfaoui, J-F Arguin, S Argyropoulos
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Journal the european physical journal c, particles and fields
Year Year not found
DOI
DOI not found
URL URL not found
Keywords
positron emission tomography microfluidics liquid chromatography plastic scintillator radiopharmaceuticals silicon photomultiplier

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