Location of Repository

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

By G. Aad, H. M. Gray, Z. Marshall, D. Lopez Mateos and K. Perez

Abstract

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-k_t algorithm with parameters R = 0.4 and R = 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 |y|<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

Publisher: American Physical Society
Year: 2012
OAI identifier: oai:authors.library.caltech.edu:33468
Provided by: Caltech Authors

Suggested articles

Preview


To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.