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Recent soft QCD and jet physics results from ATLAS

The ATLAS collaboration has performed studies of a wide range of QCD phenomena. Recent soft-QCD measurements include studies of track-based measurement of underlying event and particle production properties at sqrt(s)= 13 TeV. Final states with jets and photons provide a unique opportunity for tests...

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Detalles Bibliográficos
Autor principal: Boerner, Daniela
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:http://cds.cern.ch/record/2253657
Descripción
Sumario:The ATLAS collaboration has performed studies of a wide range of QCD phenomena. Recent soft-QCD measurements include studies of track-based measurement of underlying event and particle production properties at sqrt(s)= 13 TeV. Final states with jets and photons provide a unique opportunity for tests of perturbative QCD predictions. In this talk, the latest results on the measurement of the prompt isolated photon production and the inclusive jet and dijet production at a center of mass energy of 8 and 13 TeV are presented. The 8 TeV dataset was also used to measure the photon+jet and diphoton production, differential in a wide range of kinematic variables describing the photon+jet production dynamic. Colour-coherence effects were investigated in events with a photon accompanied by two jets. Furthermore, we will discuss the measurement of multijet production cross sections, where multijet event shape variables have been used to extract the strong coupling constant. The talk concludes with a report on the observation and measurement of W boson emission collinear to high transverse momentum jets at √s=8 TeV, and the measurement Z boson production in association with jets at √s=13 TeV.