Jet cross sections have been measured for the first time in proton-proton collisions at a centre-of-mass energy of 7 TeV using the ATLAS detector. The measurement uses an integrated luminosity of 17 nb−1 recorded at the Large Hadron Collider. The anti-kt algorithm is used to identify jets, with two jet resolution parameters, R = 0.4 and 0.6. The dominant uncertainty comes from the jet energy scale, which is determined to within 7% for central jets above 60 GeV transverse momentum. Inclusive single-jet differ- ential cross sections are presented as functions of jet trans- verse momentum and rapidity. Dijet cross sections are pre- sented as functions of dijet mass and the angular variable χ . The results are compared to expectations based on next-to- leading-order QCD, which agree with the data, providing a validation of the theory in a new kinematic regime.
Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector / Aad, G; Aloisio, Alberto; Alviggi, Mariagrazia; Canale, Vincenzo; Cevenini, Francesco; Chiefari, Giovanni; DELLA VOLPE, Domenico; Merola, Leonardo; Patricelli, Sergio; Conventi, F.; DELLA PIETRA, Massimo; Giordano, Raffaele; Musto, E.; Rossi, E.; Sanchez, A.; Carlino, G.; de Asmundis, R.; Doria, A.; Iengo, P.; Izzo, V.; Sekhniaidze, G.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 71:(2011), pp. 1-59. [10.1140/epjc/s10052-010-1512-2]
Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector
ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CANALE, VINCENZO;CEVENINI, FRANCESCO;CHIEFARI, GIOVANNI;DELLA VOLPE, DOMENICO;MEROLA, LEONARDO;PATRICELLI, SERGIO;DELLA PIETRA, MASSIMO;GIORDANO, RAFFAELE;Rossi E.;
2011
Abstract
Jet cross sections have been measured for the first time in proton-proton collisions at a centre-of-mass energy of 7 TeV using the ATLAS detector. The measurement uses an integrated luminosity of 17 nb−1 recorded at the Large Hadron Collider. The anti-kt algorithm is used to identify jets, with two jet resolution parameters, R = 0.4 and 0.6. The dominant uncertainty comes from the jet energy scale, which is determined to within 7% for central jets above 60 GeV transverse momentum. Inclusive single-jet differ- ential cross sections are presented as functions of jet trans- verse momentum and rapidity. Dijet cross sections are pre- sented as functions of dijet mass and the angular variable χ . The results are compared to expectations based on next-to- leading-order QCD, which agree with the data, providing a validation of the theory in a new kinematic regime.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
