Measurement of charged-particle event shape variables in inclusive root(s)=7 TeV proton-proton interactions with the ATLAS detector
2013 (English)In: Physical Review D, ISSN 1550-7998, Vol. 88, no 3, 032004- p.Article in journal (Refereed) Published
The measurement of charged-particle event shape variables is presented in inclusive inelastic pp collisions at a center-of-mass energy of 7 TeV using the ATLAS detector at the LHC. The observables studied are the transverse thrust, thrust minor, and transverse sphericity, each defined using the final-state charged particles' momentum components perpendicular to the beam direction. Events with at least six charged particles are selected by a minimum-bias trigger. In addition to the differential distributions, the evolution of each event shape variable as a function of the leading charged-particle transverse momentum, charged-particle multiplicity, and summed transverse momentum is presented. Predictions from several Monte Carlo models show significant deviations from data.
Place, publisher, year, edition, pages
2013. Vol. 88, no 3, 032004- p.
IdentifiersURN: urn:nbn:se:kth:diva-127892DOI: 10.1103/PhysRevD.88.032004ISI: 000322785400002ScopusID: 2-s2.0-84883473486OAI: oai:DiVA.org:kth-127892DiVA: diva2:646560
FunderSwedish Research Council
QC 20130909. Author count: 28902013-09-092013-09-092013-09-09Bibliographically approved