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Measurement of inclusive jet and dijet production in pp collisions at root s=7 TeV using the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 3025
2012 (English)In: Physical Review D, ISSN 1550-7998, Vol. 86, no 1, 014022- p.Article in journal (Refereed) Published
Abstract [en]

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-kt 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 vertical bar y vertical bar < 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.

Place, publisher, year, edition, pages
2012. Vol. 86, no 1, 014022- p.
Keyword [en]
Deep-Inelastic Scattering, Strong-Coupling Alpha(S), Cross-Section, 4-Jet Observables, Hera, Photoproduction, Qcd, Multiplicities, Distributions, Collider
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-101271DOI: 10.1103/PhysRevD.86.014022ISI: 000306689900001ScopusID: 2-s2.0-84864625043OAI: diva2:547033

QC 20120827. Author count: 3025.

Available from: 2012-08-27 Created: 2012-08-27Bibliographically approved

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Lund-Jensen, BengtStrandberg, Jonas
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