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European Physical Journal C: Particles and Fields 73 (2013) 2304
Jet energy measurement with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV
G. Aad, S. Albrand1, M.L. Andrieux1, B. Clement1, J. Collot1, S. Crépé-Renaudin1, P.A. Delsart1, J. Donini1, J.Y. Hostachy1, E. Laisne1, F. Ledroit-Guillon1, A. Lleres1, A. Lucotte1, F. Malek1, P. Martin1, F. Polci1, J. Stark1, X. Sun1, B. Trocmé1, C. Weydert1, C. Biscarat2, E. Cogneras2, G. Rahal2, S. Abdel Khalek3, H. Abreu3, N. Andari3, C. Arnault3, E. Augé3, P. Barrillon3, M. Benoit3, S. Binet3, C. Bourdarios3, C. de La Taille3, J.B. De Vivie De Regie3, L. Duflot3, M. Escalier3, L. Fayard3, D. Fournier3, J.-F. Grivaz3, S. Henrot-Versillé3, J. Hrivnac3, L. Iconomidou-Fayard3, J. Idarraga3, M. Kado3, N. Lorenzo Martinez3, A. Lounis3, N. Makovec3, P. Matricon3, F. Niedercorn3, L. Poggioli3, P. Puzo3, A. Renaud3, D. Rousseau3, G. Rybkin3, J.B. Sauvan3, J. Schaarschmidt3, A.C. Schaffer3, E. Scifo3, L. Serin3, S. Simion3, R. Tanaka3, M. Teinturier3, J.J. Veillet3, I. Vukotic3, F. Wicek3, D. Zerwas3, Z. Zhang3, E. Busato4, D. Calvet4, S. Calvet4, R. Camacho Toro4, D. Cinca4, R. Febbraro4, N. Ghodbane4, C. Guicheney4, H. Liao4, D. Pallin4, F. Podlyski4, C. Santoni4, L.-P. Says4, F. Vazeille4, L. Aperio Bella5, B. Aubert5, N. Berger5, J. Colas5, L. Di Ciaccio5, T.K.O. Doan5, S. Elles5, C. Goy5, L. Helary5, T. Hryn'Ova5, A. Jérémie5, S. Jézéquel5, M. Kataoka5, J. Labbe5, R. Lafaye5, J. Leveque5, V.P. Lombardo5, N. Massol5, P. Perrodo5, H. Przysiezniak5, E. Richter-Was5, G. Sauvage5, E. Sauvan5, T. Todorov5, D. Tsionou5, I. Wingerter-Seez5, R. Zitoun5, Y. Zolnierowski5, S. Aoun6, C. P. Bee6, C. Benchouk6, K. Bernardet6, N. Bousson6, J. C. Clémens6, Y. Coadou6, P. Delpierre6, F. Djama6, F. Etienne6, L. Feligioni6, F. Henry-Couannier6, D. Hoffmann6, F. Hubaut6, E. B. F. G. Knoops6, E. Le Guirriec6, B. Li6, E. Monnier6, J. Odier6, E. Petit6, P. Pralavorio6, Z. Qian6, A. Rozanov6, M. Talby6, N. Tannoury6, S. Tisserant6, J. Toth6, F. Touchard6, L. Vacavant6, F. Vannucci7, 8
ATLAS Collaboration(s)
(2013)

The jet energy scale (JES) and its systematic uncertainty are determined for jets measured with the ATLAS detector at the LHC in proton-proton collision data at a centre-of-mass energy of sqrt(s) = 7 TeV corresponding to an integrated luminosity of 38 inverse pb. Jets are reconstructed with the anti-kt algorithm with distance parameters R=0.4 or R=0.6. Jet energy and angle corrections are determined from Monte Carlo simulations to calibrate jets with transverse momenta pt > 20 GeV and pseudorapidities eta<4.5. The JES systematic uncertainty is estimated using the single isolated hadron response measured in situ and in test-beams. The JES uncertainty is less than 2.5% in the central calorimeter region (eta<0.8) for jets with 60 < pt < 800 GeV, and is maximally 14% for pt < 30 GeV in the most forward region 3.2 50 GeV after a dedicated correction for this effect. The JES is validated for jet transverse momenta up to 1 TeV to the level of a few percent using several in situ techniques by comparing a well-known reference such as the recoiling photon pt, the sum of the transverse momenta of tracks associated to the jet, or a system of low-pt jets recoiling against a high-pt jet. More sophisticated jet calibration schemes are presented based on calorimeter cell energy density weighting or hadronic properties of jets, providing an improved jet energy resolution and a reduced flavour dependence of the jet response. The JES systematic uncertainty determined from a combination of in situ techniques are consistent with the one derived from single hadron response measurements over a wide kinematic range. The nominal corrections and uncertainties are derived for isolated jets in an inclusive sample of high-pt jets.
1 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
2 :  CC IN2P3 - Centre de Calcul de l'inst. national de phy. nucléaire et de phy. des particules
3 :  LAL - Laboratoire de l'Accélérateur Linéaire
4 :  LPC-CLERMONT - Laboratoire de Physique Corpusculaire de Clermont-Ferrand
5 :  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
6 :  CPPM - Centre de Physique des Particules de Marseille
7 :  LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
8 :  APC - UMR 7164 - AstroParticule et Cosmologie
APC - Neutrinos
Physique/Physique des Hautes Energies - Expérience
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/1112.6426