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Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector
Ist Nazl Fis Nucl, Lab Nazl Frascati.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
Univ Michigan, Dept Phys.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 3171
2011 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 71, no 2Article in journal (Refereed) Published
Abstract [en]

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-k(t) 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 differential cross sections are presented as functions of jet transverse momentum and rapidity. Dijet cross sections are presented as functions of dijet mass and the angular variable chi. 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.

Place, publisher, year, edition, pages
2011. Vol. 71, no 2
Keyword [en]
STRONG-COUPLING ALPHA(S), PARTON DISTRIBUTIONS, ANGULAR-DISTRIBUTIONS, 4-JET OBSERVABLES, HERA, CALORIMETER, PHOTOPRODUCTION, MULTIPLICITIES, RESOLUTION, COLLIDER
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-31506DOI: 10.1140/epjc/s10052-010-1512-2ISI: 000286937900001Scopus ID: 2-s2.0-84999143123OAI: oai:DiVA.org:kth-31506DiVA: diva2:404413
Note
QC 20100317. Author count: 3171.Available from: 2011-03-17 Created: 2011-03-17 Last updated: 2017-12-11Bibliographically approved

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