Speaker
Mathias Butenschön
(Universität Hamburg)
Description
These are exciting times for quarkonium production. New theoretical advances are coinciting with the awaited measurement of new observables at the LHC. Progress has been made in testing different production mechanism for the heavy quarkonia. For instance, recently, a global data analysis of J/psi production within the framework of nonrelativistic QCD was performed at NLO accuracy, hinting at the universality of the so called long distance matrix elements. These developments will be reviewed here.
As for open flavour production, there are two successful approaches on the market, interpolating between the fixed-flavour scheme (for low p_T) and the zero-mass parton model (for high p_T): The general-mass variable-flavour-number scheme (GM-VFNS) and the fixed-order NLL scheme (FONLL). Some recent results in the light of new LHC measurements will be presented here.
Primary author
Mathias Butenschön
(Universität Hamburg)
