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Precise QCD predictions for W-boson production in association with a charm jet
A Gehrmann-De Ridder1,2, T Gehrmann2, E W N Glover3,4
1Institute for Theoretical Physics, ETH, 8093 Zurich, Switzerland.
Abstract:
The production of a W-boson with a charm quark jet provides a highly sensitive probe of the strange quark distribution in the proton. Employing a novel flavour dressing procedure to define charm quark jets, we compute W+charm-jet production up to next-to-next-to-leading order (NNLO) in QCD. We study the perturbative stability of production cross sections with same-sign and opposite-sign charge combinations for the W boson and the charm jet. A detailed breakdown according to different partonic initial states allows us to identify particularly suitable observables for the study of the quark parton distributions of different flavours.
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