Measurement of inclusive jet and dijet production in pp collisions at √s =7 TeV using the ATLAS detector

• Autores: Anduaga, Xabier Sebastián; Dova, María Teresa; Monticelli, Fernando Gabriel; Tripiana, Martín Fernando; The ATLAS Collaboration
• Año de publicación: 2012
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: Física; Inclusive and dijet cross sections; Anti-kT jet algorithm; Parton distribution functions
• Institución: Universidad Nacional de La Plata

Inclusive jet and dijet cross sections have been measured in proton-proton collisions at a center-of-mass energy of 7 TeV using the ATLAS detector at the Large Hadron Collider. The cross sections were measured using jets clustered with the anti- algorithm with parameters =0.4 and =0.6. These measurements are based on the 2010 data sample, consisting of a total integrated luminosity of 37  pb−1. Inclusive jet double-differential cross sections are presented as a function of jet transverse momentum, in bins of jet rapidity. Dijet double-differential cross sections are studied as a function of the dijet invariant mass, in bins of half the rapidity separation of the two leading jets. The measurements are performed in the jet rapidity range || <4.4, covering jet transverse momenta from 20 GeV to 1.5 TeV and dijet invariant masses from 70 GeV to 5 TeV. The data are compared to expectations based on next-to-leading-order QCD calculations corrected for nonperturbative effects, as well as to next-to-leading-order Monte Carlo predictions. In addition to a test of the theory in a new kinematic regime, the data also provide sensitivity to parton distribution functions in a region where they are currently not well-constrained.
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Instituto de Física La Plata