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Jet energy measurement with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV

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Jet energy measurement with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV

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ATLAS Collaboration; Amorós Vicente, Gabriel; Cabrera Urbán, Susana; Castillo Giménez, María Victoria; Costa Mezquita, María José; Escobar Ibañez, Carlos; Ferrer Soria, Antonio; Fiorini, Luca; Fuster Verdú, Juan A.; García García, Carmen; González de la Hoz, Santiago; Hernández Jiménez, Yesenia; Higón Rodríguez, Emilio; Irles Quiles, Adrián; Kaci, Mohammed; Lacasta Llácer, Carlos; Lacuesta Miquel, Vicente; Martí García, Salvador; Miñano Moya, Mercedes; Mitsou, Vasiliki; Moles Valls, Regina; Moreno Llácer, María; Oliver García, Elena; Pérez García-Estañ, María Teresa; Ros Martínez, Eduardo; Salt Cairols, José; Solans Sánchez, Carlos Antonio; Soldevila, U.; Sánchez Martínez, Javier; Torró Pastor, Emma; Valladolid Gallego, E.; Valls Ferrer, Juan Antonio; Villaplana Pérez, Miguel; Vos, Marcel; Wildauer, A.
Aquest document és un/a article, creat/da en: 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<eta<4.5. The uncertainty for additional energy from multiple proton-proton col... [Llegir més ...]
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