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Scientific article
English

Measurement of event shapes at large momentum transfer with the ATLAS detector in pp collisions at √s=7 TeV

ContributorsATLAS Collaboration
Published inEuropean physical journal. C, Particles and fields, vol. 72, no. 2211, 22
Publication date2012
Abstract

A measurement of event shape variables is presented for large momentum transfer proton-proton collisions using the ATLAS detector at the Large Hadron Collider. Six event shape variables calculated using hadronic jets are studied in inclusive multi-jet events in 35 pb−1 of integrated luminosity at a center-of-mass energy of TeX . These measurements are compared to predictions by three Monte Carlo event generators containing leading-logarithmic parton showers matched to leading order matrix elements for 2→2 and 2→n (n=2,…,6) scattering. Measurements of the third-jet resolution parameter, aplanarity, thrust, sphericity, and transverse sphericity are generally well described. The mean value of each event shape variable is evaluated as a function of the average momentum of the two leading jets p T,1 and p T,2, with a mean p T approaching 1 TeV.

Citation (ISO format)
ATLAS Collaboration. Measurement of event shapes at large momentum transfer with the ATLAS detector in pp collisions at √s=7 TeV. In: European physical journal. C, Particles and fields, 2012, vol. 72, n° 2211, p. 22. doi: 10.1140/epjc/s10052-012-2211-y
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Article (Published version)
accessLevelRestricted
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ISSN of the journal1434-6044
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