Measurement of event shapes at large momentum transfer with the ATLAS detector in pp collisions at √s=7 TeV
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[superscript −1] of integrated lu...
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| Format: | Article |
| Language: | en_US |
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Springer-Verlag
2016
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| Online Access: | http://hdl.handle.net/1721.1/105494 https://orcid.org/0000-0002-7586-7253 |
| Summary: | 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[superscript −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 p[subscript T,1] and p[subscript T,2], with a mean p[subscript T] approaching 1 TeV. |
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