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

The ATLAS Collaboration

Research output: Contribution to journalArticle

24 Citations (Scopus)

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 √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.

Original languageEnglish
Article number2211
JournalEuropean Physical Journal C
Volume72
Issue number11
DOIs
Publication statusPublished - Nov 20 2012
Externally publishedYes

Fingerprint

Momentum transfer
momentum transfer
Detectors
collisions
detectors
Protons
Colliding beam accelerators
protons
Luminance
Momentum
showers
partons
thrust
center of mass
Scattering
generators
luminosity
momentum
predictions
scattering

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Engineering (miscellaneous)

Cite this

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

In: European Physical Journal C, Vol. 72, No. 11, 2211, 20.11.2012.

Research output: Contribution to journalArticle

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