Measurement of event shapes at large momentum transfer with the ATLAS detector in pp collisions at √s=7 TeV
2012 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 72, no 11, 2211- p.Article in journal (Refereed) Published
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 √s=7 TeV. 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 pT,1 and pT,2, with a mean pT approaching 1 TeV.
Place, publisher, year, edition, pages
2012. Vol. 72, no 11, 2211- p.
IdentifiersURN: urn:nbn:se:uu:diva-193858DOI: 10.1140/epjc/s10052-012-2211-yISI: 000312074800015OAI: oai:DiVA.org:uu-193858DiVA: diva2:603656
ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1140/epjc/s10052-012-2211-y2013-02-062013-02-062013-07-04Bibliographically approved