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

Authors :
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.
Source :
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, M. 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, J. Torró Pastor, Emma Valladolid Gallego, E. Valls Ferrer, Juan Antonio Villaplana Pérez, Miguel Vos, Marcel Wildauer, A. 2013 Jet energy measurement with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV European Physical Journal C 73 3 2304-1 2304-118, RODERIC. Repositorio Institucional de la Universitat de Valéncia, instname
Publication Year :
2013

Abstract

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 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.

Details

Database :
OpenAIRE
Journal :
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, M. 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, J. Torró Pastor, Emma Valladolid Gallego, E. Valls Ferrer, Juan Antonio Villaplana Pérez, Miguel Vos, Marcel Wildauer, A. 2013 Jet energy measurement with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV European Physical Journal C 73 3 2304-1 2304-118, RODERIC. Repositorio Institucional de la Universitat de Valéncia, instname
Accession number :
edsair.dedup.wf.001..bb671ccb251af1956c03054992200fe2