9 papers · 1 filter
Photon - Jet Correlations and Constraints on Fragmentation Functions
Z. Belghobsi, M. Fontannaz, J. -Ph. Guillet +3
We study the production of a large-pT photon in association with a jet in proton-proton collisions. We examine the sensitivity of the jet rapidity distribution to the gluon distrib…
NNLO moments of event shapes in e+e- annihilation
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +1
We compute the next-to-next-to-leading order (NNLO) QCD corrections to the first five moments of six event shape variables related to three-particle final states in electron-positr…
Nine-Propagator Master Integrals for Massless Three-Loop Form Factors
G. Heinrich, T. Huber, D. A. Kosower +1
We complete the calculation of master integrals for massless three-loop form factors by computing the previously-unknown three diagrams with nine propagators in dimensional regular…
Direct photon production at HERA, the Tevatron and the LHC
R. E. Blair, S. Chekanov, G. Heinrich +2
We review several most recent prompt-photon measurements at HERA and the Tevatron and discuss their implication for future measurements at the LHC. A comparison to Monte Carlo mode…
Event shapes in annhilation at NNLO
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +1
We report first results on the calculation of NNLO corrections to event shape distributions in electron-positron annhilation. The corrections are sizeable for all variables, howeve…
First determination of the strong coupling constant using NNLO predictions for hadronic event shapes in e^+e^- annihilations
G. Dissertori, A. Gehrmann-De Ridder, T. Gehrmann +3
We present the first determination of the strong coupling constant from a fit of next-to-next-to-leading order QCD predictions to event-shape variables, measured in annihi…